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//]]> </script> <noscript> <img alt='' height='1' src='https://ad.doubleclick.net/ddm/activity/src=2542116;type=gblog;cat=googl0;ord=1?' width='1'/> </noscript>  <div class='header-outer'> <div class='header-inner'> <div class='section' id='header'><div class='widget Header' data-version='1' id='Header1'> <div class='header-left'> <div class='header-title'> <a class='google-logo' href='https://blog.chromium.org/'> <img alt="Chromium Blog" height="50" src="//1.bp.blogspot.com/-vkF7AFJOwBk/VkQxeAGi1mI/AAAAAAAARYo/57denvsQ8zA/s1600-r/logo_chromium.png"> </a> <a href='/.'> <h2> Chromium Blog </h2> </a> </div> <div class='header-desc'> News and developments from the open source browser project </div> </div> </div></div> </div> </div>  <div class='cols-wrapper loading'> <div class='col-main-wrapper'> <div class='col-main'> <div class='section' id='main'><div class='widget Blog' data-version='1' id='Blog1'> <div class='post' data-id='7238622143129211727' itemscope='' itemtype='http://schema.org/BlogPosting'> <h2 class='title' itemprop='name'> <a href='https://blog.chromium.org/2018/03/chrome-66-beta-css-typed-object-model.html' itemprop='url' title='Chrome 66 Beta: CSS Typed Object Model, Async Clipboard API, AudioWorklet'> Chrome 66 Beta: CSS Typed Object Model, Async Clipboard API, AudioWorklet </a> </h2> <div class='post-header'> <div class='published'> <span class='publishdate' itemprop='datePublished'> Wednesday, March 21, 2018 </span> </div> </div> <div class='post-body'> <div class='post-content' itemprop='articleBody'> <script type='text/template'> Unless otherwise noted, changes described below apply to the newest Chrome Beta channel release for Android, Chrome OS, Linux, macOS, and Windows. View a complete list of the features in Chrome 66 on <a href="https://www.chromestatus.com/features#milestone%3D66">ChromeStatus</a>.<br /> <h3> The ImageBitmap Rendering Context for <canvas></h3> Historically, rendering an image to a canvas has involved first creating an <code><img></code> tag and then rendering its contents to a canvas. This causes multiple copies of the image to be stored in memory. <a href="https://www.chromestatus.com/features/5709799995998208">A new rendering context</a> streamlines the display of <code>ImageBitmap</code> objects by avoiding memory duplication and rendering them more efficiently.<br /> This example shows how to do this using an <code>ImageBitmapRenderingContext</code>. This essentially transfers ownership of an image's pixels. This example does so from a blob to a <code><canvas></code>, but pixels can be moved between <code><canvas></code> elements as well. Note that the blob is compressed so it is not a full copy in memory.<br /> <br /> <pre>const image = await createImageBitmap(imageBlob); const canvas = document.createElement('canvas'); const context = canvas.getContext('bitmaprenderer'); context.transferFromImageBitmap(image); canvas.toBlob((outputJPEGBlob) => { // Do something with outputJPEGBlob. }, 'image/jpeg'); </pre> <br /> If this were done without <code>createImageBitmap()</code>, the <code>imageBlob</code> would be lazily decoded, which would cause jank. On the other hand <code>createImageBitmap()</code> is asynchronous which allows you to decode it completely before using it and avoiding jank. For example, a WebGL game could use this to load new textures on the fly as gameplay progresses.<br /> <h3> CSS Typed Object Model</h3> Historically, developers wanting to manipulate CSS properties have had to manipulate strings only for the browser to then convert it back to a typed representation. What made things worse was when developers tried to read the value of a CSS property in Javascript, this typed value was converted back to a string. <br /> In version 66, <a href="https://www.chromestatus.com/features/5682491075592192">Chrome implements</a> the <a href="https://drafts.css-houdini.org/css-typed-om/">CSS Typed Object Model (OM) Level 1</a>, a part of <a href="https://developers.google.com/web/updates/2016/05/houdini">Houdini</a>, for a <a href="https://chromium.googlesource.com/chromium/src/+/master/third_party/WebKit/Source/core/css/cssom/README.md">subset of CSS properties</a>. Typed OM reduces this burden on both the developer and browser by exposing CSS values as typed JavaScript objects rather than strings. Along with allowing the performant manipulation of values assigned to CSS properties, Typed OM allows developers to write more maintainable and easy to understand code. <br /> A brief example illustrates the point. Previously if I wanted to set the opacity of an element I could do this:<br /> <br /> <pre>el.style.opacity = 0.3; el.style.opacity === "0.3" </pre> <br /> With CSSOM:<br /> <br /> <pre>el.attributeStyleMap.set("opacity", CSS.number("0.3")); el.attributeStyleMap.get("opacity").value === 0.3 </pre> <br /> The returned values above are of type <code>CSSUnitValue</code>, which are easier to manipulate than strings. <br /> <h3> Asynchronous Clipboard API</h3> The <a href="https://developers.google.com/web/updates/2018/03/clipboardapi">new asynchronous clipboard API</a> provides a promise-based means of reading from and writing to the clipboard. It's simpler than the old <code>execCommand('copy')</code> API <a href="https://www.chromestatus.com/feature/5223997243392000">released in Chrome 43</a> and integrates with the <a href="https://www.chromestatus.com/feature/6376494003650560">Permissions API</a>. Future Chrome releases will also support copy/paste of richer types of data, including images.<br /> To get a taste of this API, lets do simple write and read operations with text.<br /> <br /> <pre>try { await navigator.clipboard.writeText("Hello, clipboard."); } catch { console.error("Unable to write to clipboard."); } </pre> <br /> Similarly, to read text back:<br /> <br /> <pre>const data = await navigator.clipboard.readText(); console.log("From the clipboard:", data); </pre> <br /> For more information, including how to use security and permissions with the API, read <a href="https://developers.google.com/web/updates/2018/03/clipboardapi">Unblocking Clipboard Access</a> and check out our <a href="https://github.com/GoogleChrome/samples/tree/gh-pages/async-clipboard">sample</a>.<br /> <h3> AudioWorklet</h3> The legacy <code>ScriptProcessorNode</code> was asynchronous and required thread hops, which could produce an unstable audio output. The <code><a href="https://www.google.com/url?q=https://developers.google.com/web/updates/2017/12/audio-worklet&sa=D&ust=1521125284084000&usg=AFQjCNFzqKCa5PZZ0g4G5BjfdDFchwmbig">AudioWorklet</a></code> object provides a new synchronous JavaScript execution context which allows developers to programmatically control audio without additional latency and higher stability in the output audio.<br /> You can see example code in action along with other examples at <a href="https://googlechromelabs.github.io/web-audio-samples/audio-worklet/">Google Chrome Labs</a>.<br /> In addition to AudioWorklet, other worklet API are being built. <code><a href="https://developers.google.com/web/updates/2018/01/paintapi">PaintWorklet</a></code> was released in Chrome 65/Opera 52. An <code><a href="https://www.chromestatus.com/feature/5762982487261184">AnimationWorklet</a></code> is planned. <code>ScriptProcessorNode</code> will be deprecated some time after <code>AudioWorklet</code> ships.<br /> <h3> Other Features in this Release</h3> <h4> Blink > Animation</h4> The add and accumulate compositing operations are intended for building modularized animations. The <code>add</code> and <code>accumulate</code> keywords will be supported in Chrome soon. Until then, they will no longer throw errors. This is to maintain compatibility with Firefox and other implementations.<br /> <h4> Blink > CSS</h4> CSS has two new features.<br /> <ul> <li>The mathematical expressions <code>calc(),</code> <code>min()</code>, and <code>max()</code> are now supported in media queries, as required by the <a href="https://drafts.csswg.org/css-values-4/#calc-notation">CSS Values and Units Module Level 4</a> specification. This change brings them in line with other types of rules where these functions are allowed anywhere a number is allowed.</li> <li>Floating point values are now allowed in the <code><a href="https://developer.mozilla.org/en-US/docs/Web/CSS/color_value">rgb()</a></code> and <code>rgba()</code> functions.</li> </ul> <h4> Blink > Feature Policy</h4> By default, the <code>deviceorientation</code>, <code>deviceorientationabsolute</code>, and <code>devicemotion</code> events are now restricted to top-level document and same-origin subframes, the same as if the <a href="https://github.com/WICG/feature-policy/blob/gh-pages/features.md">feature policy</a> for those features were set to <code>'self'</code>. To modify this behavior, explicitly <a href="https://github.com/WICG/feature-policy/blob/gh-pages/features.md#sensor-features">enable or disable the specific feature</a>.<br /> <h4> Blink > File API</h4> The <a href="https://developer.mozilla.org/en-US/docs/Web/API/File">File API</a> now results in a network error instead of a 404 when attempting to read from an invalid or non-existing blob URL.<br /> <h4> Blink > Forms</h4> HTML forms have two new features.<br /> <ul> <li>The <code><a href="https://html.spec.whatwg.org/multipage/form-elements.html#the-textarea-element"><textarea></a></code> element and the <code><a href="https://html.spec.whatwg.org/multipage/form-elements.html#the-select-element"><select></a></code> element now support the <code>autocomplete</code> attribute as required by the specification.</li> <li>A mutable checkbox now fires three events as <a href="https://html.spec.whatwg.org/#checkbox-state-(type=checkbox)">required by the HTML specification</a>: a <code>click</code> event, then an <code>input</code> event, then a <code>change</code> event. Formerly only the <code>click</code> and <code>change</code> events were fired.</li> </ul> <br /> <h4> Blink > Fullscreen</h4> If a page in fullscreen mode opens a popup and calls <code>window.focus(),</code> <a href="https://www.chromestatus.com/feature/5732193850621952">that page exits full screen</a>. This does not occur if the popup receives focus some other way.<br /> <h4> Blink > GetUserMedia</h4> A new method on the <code>MediaStreamTrack</code> interface called <code><a href="https://developer.mozilla.org/en-US/docs/Web/API/MediaStreamTrack/getCapabilities">getCapabilities()</a></code><br /> returns a <code>MediaTrackCapabilities</code> object, which specifies the values or range of values which each constrianable property. Capabilities vary by device. <br /> <h4> Blink > JavaScript</h4> There are several JavaScript changes.<br /> <ul> <li>The <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/toString">Function.prototype.toString()</a></code> function now returns exactly what is written in the source code. This includes whitespace and other text that may have been used. For example, if there is a comment between the function keyword and the function name, the comment is now returned in addition to the keyword and name.</li> <li><a href="https://github.com/tc39/proposal-json-superset">JSON is now a syntactic subset of ECMAScript</a>, which allows line separator (U+2028) and paragraph separator (U+2029) symbols in string literals.</li> <li>The <code>catch</code> clause of a <code>try</code> statement can now be <a href="https://tc39.github.io/proposal-optional-catch-binding/">used without a parameter</a>.</li> <li><code>String.prototype.trimStart()</code> and <code>String.prototype.trimEnd()</code> are now available as the standards-based way of trimming whitespace from strings, in addition to <code>String.prototype.trim()</code> which was already implemented. The non-standard <code>trimLeft()</code> and <code>trimRight()</code> remain as aliases of the new methods for backward compatibility.</li> <li>The <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/values">Array.prototype.values()</a></code> method returns a new array iterator object that contains the values for each index in the array.</li> </ul> <br /> <h4> Blink > Layout</h4> Layout has two new features.<br /> <ul> <li>The grid prefix has been removed from the CSS gutter properties:<ul> <li><code>grid-gap</code> becomes <code>gap</code></li> <li><code>grid-row-gap</code> becomes <code>row-gap</code></li> <li><code>grid-column-gap</code> becomes <code>column-gap</code></li> </ul> </li> </ul> <blockquote> The default value for all three is <code>normal</code> and the prefixed properties are aliases of the new ones. Note that <code>column-gap</code> property already exists and is used by <code>css-multicol</code>. </blockquote> <ul> <li>Elements with the display properties <code>table-row</code>, <code>table-row-group</code>,<code> table-header-group</code>, <code>table-footer-group</code>, <code>table-cell</code>, and <code>table-caption</code> that have a transform property are now containing blocks for fixed position elements. Blink currently does not make <code><tr></code>, <code><tbody></code>, <code><tfoot></code>, and <code><thead></code> be containing blocks for fixed-position elements.</li> </ul> <h4> Blink > Media</h4> Media has two new features.<br /> <ul> <li>As announced <a href="https://blog.chromium.org/2017/09/unified-autoplay.html">earlier</a>, <code><a href="https://www.chromium.org/audio-video/autoplay">autoplay</a></code> is now <a href="https://developers.google.com/web/updates/2017/09/autoplay-policy-changes">allowed</a> only when either the media won't play sound, after the user clicks or taps on the site, or (on desktop) if the user has previously shown an interest in media on the site. This will reduce unexpected video playbacks with sound when first opening a web page.</li> <li>The <a href="https://www.chromestatus.com/feature/5869632707624960">Media Capabilities, Decoding Info API</a> allows websites to get more information about the decoding abilities of the client. This <a href="https://developers.google.com/web/updates/2017/12/chrome-63-64-media-updates#media-capabilities-decoding-info-api">enables</a> more informed selection of media streams for the user, avoiding scenarios such as where the client is unable to smoothly and power-efficiently decode a resolution that might have been picked based only on available bandwidth and screen size.</li> </ul> <br /> <h4> Blink > Network</h4> The Fetch API has two new features.<br /> <ul> <li>The Request object now supports a <code><a href="https://www.chromestatus.com/features/5760375567941632">keepalive</a></code> property which allows a fetch to continue after a tab is closed. This feature is invoked by passing a boolean in the constructor's initialization object. Its value can be read back from the object itself. This property can be used with <code>sendBeacon()</code> as well.</li> <li>New <code><a href="https://developer.mozilla.org/en-US/docs/Web/API/AbortSignal">AbortSignal</a></code> and <code><a href="https://developer.mozilla.org/en-US/docs/Web/API/AbortController">AbortController</a></code> interfaces allow a fetch to be canceled. To accomplish this create an <code>AbortController</code> object and pass its signal property as an option to <code>fetch</code>. Calling <code>abortController.abort()</code> cancels the fetch. There's more information in our <a href="https://developers.google.com/web/updates/2017/09/abortable-fetch">abortable fetch article</a>, but a small code example is shown below.</li> </ul> <br /> <br /> <pre>const controller = new AbortController(); const signal = controller.signal; const requestPromise = fetch(url, { signal }); // Abort the fetch: controller.abort(); </pre> <br /> <h4> Blink > ServiceWorker</h4> Service workers have two changes.<br /> <ul> <li>A service worker can no longer respond to a request whose mode is <code>same-origin</code> with a response whose type is <code>CORS</code>. This is a security measure recently added to the Fetch specification.</li> <li><code>FetchEvent.clientId</code> now returns an empty string instead of null when it isn't set. For example, this can occur during a navigation request.</li> </ul> <h4> Blink > WebRTC</h4> Chrome now supports the <code><a href="https://bugs.chromium.org/p/chromium/issues/detail?id=812587">RTCRtpSender.dtmf</a></code><br /> attribute per the specification. This replaces the <code>CreateDTMFSender()</code> function which has not yet been deprecated. <br /> <h3> Deprecations and Interoperability Improvements</h3> <h4> Blink > CSS</h4> The <code>object-position</code> and <code>perspective-origin</code> properties no longer accepts three-part values such as <code>top right 20%</code>. This change also applies to basic shapes and gradients. Valid position values must always have 1, 2, or 4 parts.<br /> <ul> </ul> <h4> Blink > HTML</h4> Following a specification change, <code><a href="https://developer.mozilla.org/en-US/docs/Web/API/ImageCapture">ImageCapture</a>.prototype.setOptions()</code> has been removed.<br /> <ul> </ul> <h4> Blink > Input</h4> Following a specification change, <code><a href="https://developer.mozilla.org/en-US/docs/Web/API/Document/createTouch">document.createTouch()</a></code> and <code><a href="https://developer.mozilla.org/en-US/docs/Web/API/Document/createTouchList">document.createTouchList()</a></code> have been removed.<br /> <h4> Blink > Web Audio</h4> Following a specification change, automatic dezippering of <code>AudioParam.prototype.value</code> changes was removed from Chrome. If you need to smooth the value of <code>AudioParam </code>changes, use<code> AudioParam.prototype.setTargetAtTime()</code>.<br /> <ul> </ul> <span class="post-author">Posted by Naina Raisinghani</span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </script> <noscript> Unless otherwise noted, changes described below apply to the newest Chrome Beta channel release for Android, Chrome OS, Linux, macOS, and Windows. View a complete list of the features in Chrome 66 on <a href="https://www.chromestatus.com/features#milestone%3D66">ChromeStatus</a>.<br /> <h3> The ImageBitmap Rendering Context for <canvas></h3> Historically, rendering an image to a canvas has involved first creating an <code><img></code> tag and then rendering its contents to a canvas. This causes multiple copies of the image to be stored in memory. <a href="https://www.chromestatus.com/features/5709799995998208">A new rendering context</a> streamlines the display of <code>ImageBitmap</code> objects by avoiding memory duplication and rendering them more efficiently.<br /> This example shows how to do this using an <code>ImageBitmapRenderingContext</code>. This essentially transfers ownership of an image's pixels. This example does so from a blob to a <code><canvas></code>, but pixels can be moved between <code><canvas></code> elements as well. Note that the blob is compressed so it is not a full copy in memory.<br /> <br /> <pre>const image = await createImageBitmap(imageBlob); const canvas = document.createElement('canvas'); const context = canvas.getContext('bitmaprenderer'); context.transferFromImageBitmap(image); canvas.toBlob((outputJPEGBlob) => { // Do something with outputJPEGBlob. }, 'image/jpeg'); </pre> <br /> If this were done without <code>createImageBitmap()</code>, the <code>imageBlob</code> would be lazily decoded, which would cause jank. On the other hand <code>createImageBitmap()</code> is asynchronous which allows you to decode it completely before using it and avoiding jank. For example, a WebGL game could use this to load new textures on the fly as gameplay progresses.<br /> <h3> CSS Typed Object Model</h3> Historically, developers wanting to manipulate CSS properties have had to manipulate strings only for the browser to then convert it back to a typed representation. What made things worse was when developers tried to read the value of a CSS property in Javascript, this typed value was converted back to a string. <br /> In version 66, <a href="https://www.chromestatus.com/features/5682491075592192">Chrome implements</a> the <a href="https://drafts.css-houdini.org/css-typed-om/">CSS Typed Object Model (OM) Level 1</a>, a part of <a href="https://developers.google.com/web/updates/2016/05/houdini">Houdini</a>, for a <a href="https://chromium.googlesource.com/chromium/src/+/master/third_party/WebKit/Source/core/css/cssom/README.md">subset of CSS properties</a>. Typed OM reduces this burden on both the developer and browser by exposing CSS values as typed JavaScript objects rather than strings. Along with allowing the performant manipulation of values assigned to CSS properties, Typed OM allows developers to write more maintainable and easy to understand code. <br /> A brief example illustrates the point. Previously if I wanted to set the opacity of an element I could do this:<br /> <br /> <pre>el.style.opacity = 0.3; el.style.opacity === "0.3" </pre> <br /> With CSSOM:<br /> <br /> <pre>el.attributeStyleMap.set("opacity", CSS.number("0.3")); el.attributeStyleMap.get("opacity").value === 0.3 </pre> <br /> The returned values above are of type <code>CSSUnitValue</code>, which are easier to manipulate than strings. <br /> <h3> Asynchronous Clipboard API</h3> The <a href="https://developers.google.com/web/updates/2018/03/clipboardapi">new asynchronous clipboard API</a> provides a promise-based means of reading from and writing to the clipboard. It's simpler than the old <code>execCommand('copy')</code> API <a href="https://www.chromestatus.com/feature/5223997243392000">released in Chrome 43</a> and integrates with the <a href="https://www.chromestatus.com/feature/6376494003650560">Permissions API</a>. Future Chrome releases will also support copy/paste of richer types of data, including images.<br /> To get a taste of this API, lets do simple write and read operations with text.<br /> <br /> <pre>try { await navigator.clipboard.writeText("Hello, clipboard."); } catch { console.error("Unable to write to clipboard."); } </pre> <br /> Similarly, to read text back:<br /> <br /> <pre>const data = await navigator.clipboard.readText(); console.log("From the clipboard:", data); </pre> <br /> For more information, including how to use security and permissions with the API, read <a href="https://developers.google.com/web/updates/2018/03/clipboardapi">Unblocking Clipboard Access</a> and check out our <a href="https://github.com/GoogleChrome/samples/tree/gh-pages/async-clipboard">sample</a>.<br /> <h3> AudioWorklet</h3> The legacy <code>ScriptProcessorNode</code> was asynchronous and required thread hops, which could produce an unstable audio output. The <code><a href="https://www.google.com/url?q=https://developers.google.com/web/updates/2017/12/audio-worklet&sa=D&ust=1521125284084000&usg=AFQjCNFzqKCa5PZZ0g4G5BjfdDFchwmbig">AudioWorklet</a></code> object provides a new synchronous JavaScript execution context which allows developers to programmatically control audio without additional latency and higher stability in the output audio.<br /> You can see example code in action along with other examples at <a href="https://googlechromelabs.github.io/web-audio-samples/audio-worklet/">Google Chrome Labs</a>.<br /> In addition to AudioWorklet, other worklet API are being built. <code><a href="https://developers.google.com/web/updates/2018/01/paintapi">PaintWorklet</a></code> was released in Chrome 65/Opera 52. An <code><a href="https://www.chromestatus.com/feature/5762982487261184">AnimationWorklet</a></code> is planned. <code>ScriptProcessorNode</code> will be deprecated some time after <code>AudioWorklet</code> ships.<br /> <h3> Other Features in this Release</h3> <h4> Blink > Animation</h4> The add and accumulate compositing operations are intended for building modularized animations. The <code>add</code> and <code>accumulate</code> keywords will be supported in Chrome soon. Until then, they will no longer throw errors. This is to maintain compatibility with Firefox and other implementations.<br /> <h4> Blink > CSS</h4> CSS has two new features.<br /> <ul> <li>The mathematical expressions <code>calc(),</code> <code>min()</code>, and <code>max()</code> are now supported in media queries, as required by the <a href="https://drafts.csswg.org/css-values-4/#calc-notation">CSS Values and Units Module Level 4</a> specification. This change brings them in line with other types of rules where these functions are allowed anywhere a number is allowed.</li> <li>Floating point values are now allowed in the <code><a href="https://developer.mozilla.org/en-US/docs/Web/CSS/color_value">rgb()</a></code> and <code>rgba()</code> functions.</li> </ul> <h4> Blink > Feature Policy</h4> By default, the <code>deviceorientation</code>, <code>deviceorientationabsolute</code>, and <code>devicemotion</code> events are now restricted to top-level document and same-origin subframes, the same as if the <a href="https://github.com/WICG/feature-policy/blob/gh-pages/features.md">feature policy</a> for those features were set to <code>'self'</code>. To modify this behavior, explicitly <a href="https://github.com/WICG/feature-policy/blob/gh-pages/features.md#sensor-features">enable or disable the specific feature</a>.<br /> <h4> Blink > File API</h4> The <a href="https://developer.mozilla.org/en-US/docs/Web/API/File">File API</a> now results in a network error instead of a 404 when attempting to read from an invalid or non-existing blob URL.<br /> <h4> Blink > Forms</h4> HTML forms have two new features.<br /> <ul> <li>The <code><a href="https://html.spec.whatwg.org/multipage/form-elements.html#the-textarea-element"><textarea></a></code> element and the <code><a href="https://html.spec.whatwg.org/multipage/form-elements.html#the-select-element"><select></a></code> element now support the <code>autocomplete</code> attribute as required by the specification.</li> <li>A mutable checkbox now fires three events as <a href="https://html.spec.whatwg.org/#checkbox-state-(type=checkbox)">required by the HTML specification</a>: a <code>click</code> event, then an <code>input</code> event, then a <code>change</code> event. Formerly only the <code>click</code> and <code>change</code> events were fired.</li> </ul> <br /> <h4> Blink > Fullscreen</h4> If a page in fullscreen mode opens a popup and calls <code>window.focus(),</code> <a href="https://www.chromestatus.com/feature/5732193850621952">that page exits full screen</a>. This does not occur if the popup receives focus some other way.<br /> <h4> Blink > GetUserMedia</h4> A new method on the <code>MediaStreamTrack</code> interface called <code><a href="https://developer.mozilla.org/en-US/docs/Web/API/MediaStreamTrack/getCapabilities">getCapabilities()</a></code><br /> returns a <code>MediaTrackCapabilities</code> object, which specifies the values or range of values which each constrianable property. Capabilities vary by device. <br /> <h4> Blink > JavaScript</h4> There are several JavaScript changes.<br /> <ul> <li>The <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/toString">Function.prototype.toString()</a></code> function now returns exactly what is written in the source code. This includes whitespace and other text that may have been used. For example, if there is a comment between the function keyword and the function name, the comment is now returned in addition to the keyword and name.</li> <li><a href="https://github.com/tc39/proposal-json-superset">JSON is now a syntactic subset of ECMAScript</a>, which allows line separator (U+2028) and paragraph separator (U+2029) symbols in string literals.</li> <li>The <code>catch</code> clause of a <code>try</code> statement can now be <a href="https://tc39.github.io/proposal-optional-catch-binding/">used without a parameter</a>.</li> <li><code>String.prototype.trimStart()</code> and <code>String.prototype.trimEnd()</code> are now available as the standards-based way of trimming whitespace from strings, in addition to <code>String.prototype.trim()</code> which was already implemented. The non-standard <code>trimLeft()</code> and <code>trimRight()</code> remain as aliases of the new methods for backward compatibility.</li> <li>The <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/values">Array.prototype.values()</a></code> method returns a new array iterator object that contains the values for each index in the array.</li> </ul> <br /> <h4> Blink > Layout</h4> Layout has two new features.<br /> <ul> <li>The grid prefix has been removed from the CSS gutter properties:<ul> <li><code>grid-gap</code> becomes <code>gap</code></li> <li><code>grid-row-gap</code> becomes <code>row-gap</code></li> <li><code>grid-column-gap</code> becomes <code>column-gap</code></li> </ul> </li> </ul> <blockquote> The default value for all three is <code>normal</code> and the prefixed properties are aliases of the new ones. Note that <code>column-gap</code> property already exists and is used by <code>css-multicol</code>. </blockquote> <ul> <li>Elements with the display properties <code>table-row</code>, <code>table-row-group</code>,<code> table-header-group</code>, <code>table-footer-group</code>, <code>table-cell</code>, and <code>table-caption</code> that have a transform property are now containing blocks for fixed position elements. Blink currently does not make <code><tr></code>, <code><tbody></code>, <code><tfoot></code>, and <code><thead></code> be containing blocks for fixed-position elements.</li> </ul> <h4> Blink > Media</h4> Media has two new features.<br /> <ul> <li>As announced <a href="https://blog.chromium.org/2017/09/unified-autoplay.html">earlier</a>, <code><a href="https://www.chromium.org/audio-video/autoplay">autoplay</a></code> is now <a href="https://developers.google.com/web/updates/2017/09/autoplay-policy-changes">allowed</a> only when either the media won't play sound, after the user clicks or taps on the site, or (on desktop) if the user has previously shown an interest in media on the site. This will reduce unexpected video playbacks with sound when first opening a web page.</li> <li>The <a href="https://www.chromestatus.com/feature/5869632707624960">Media Capabilities, Decoding Info API</a> allows websites to get more information about the decoding abilities of the client. This <a href="https://developers.google.com/web/updates/2017/12/chrome-63-64-media-updates#media-capabilities-decoding-info-api">enables</a> more informed selection of media streams for the user, avoiding scenarios such as where the client is unable to smoothly and power-efficiently decode a resolution that might have been picked based only on available bandwidth and screen size.</li> </ul> <br /> <h4> Blink > Network</h4> The Fetch API has two new features.<br /> <ul> <li>The Request object now supports a <code><a href="https://www.chromestatus.com/features/5760375567941632">keepalive</a></code> property which allows a fetch to continue after a tab is closed. This feature is invoked by passing a boolean in the constructor's initialization object. Its value can be read back from the object itself. This property can be used with <code>sendBeacon()</code> as well.</li> <li>New <code><a href="https://developer.mozilla.org/en-US/docs/Web/API/AbortSignal">AbortSignal</a></code> and <code><a href="https://developer.mozilla.org/en-US/docs/Web/API/AbortController">AbortController</a></code> interfaces allow a fetch to be canceled. To accomplish this create an <code>AbortController</code> object and pass its signal property as an option to <code>fetch</code>. Calling <code>abortController.abort()</code> cancels the fetch. There's more information in our <a href="https://developers.google.com/web/updates/2017/09/abortable-fetch">abortable fetch article</a>, but a small code example is shown below.</li> </ul> <br /> <br /> <pre>const controller = new AbortController(); const signal = controller.signal; const requestPromise = fetch(url, { signal }); // Abort the fetch: controller.abort(); </pre> <br /> <h4> Blink > ServiceWorker</h4> Service workers have two changes.<br /> <ul> <li>A service worker can no longer respond to a request whose mode is <code>same-origin</code> with a response whose type is <code>CORS</code>. This is a security measure recently added to the Fetch specification.</li> <li><code>FetchEvent.clientId</code> now returns an empty string instead of null when it isn't set. For example, this can occur during a navigation request.</li> </ul> <h4> Blink > WebRTC</h4> Chrome now supports the <code><a href="https://bugs.chromium.org/p/chromium/issues/detail?id=812587">RTCRtpSender.dtmf</a></code><br /> attribute per the specification. This replaces the <code>CreateDTMFSender()</code> function which has not yet been deprecated. <br /> <h3> Deprecations and Interoperability Improvements</h3> <h4> Blink > CSS</h4> The <code>object-position</code> and <code>perspective-origin</code> properties no longer accepts three-part values such as <code>top right 20%</code>. This change also applies to basic shapes and gradients. Valid position values must always have 1, 2, or 4 parts.<br /> <ul> </ul> <h4> Blink > HTML</h4> Following a specification change, <code><a href="https://developer.mozilla.org/en-US/docs/Web/API/ImageCapture">ImageCapture</a>.prototype.setOptions()</code> has been removed.<br /> <ul> </ul> <h4> Blink > Input</h4> Following a specification change, <code><a href="https://developer.mozilla.org/en-US/docs/Web/API/Document/createTouch">document.createTouch()</a></code> and <code><a href="https://developer.mozilla.org/en-US/docs/Web/API/Document/createTouchList">document.createTouchList()</a></code> have been removed.<br /> <h4> Blink > Web Audio</h4> Following a specification change, automatic dezippering of <code>AudioParam.prototype.value</code> changes was removed from Chrome. If you need to smooth the value of <code>AudioParam </code>changes, use<code> AudioParam.prototype.setTargetAtTime()</code>.<br /> <ul> </ul> <span class="post-author">Posted by Naina Raisinghani</span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </noscript> </div> </div> <div class='share'> <span class='twitter-custom social-wrapper' data-href='http://twitter.com/share?text=Chromium Blog:Chrome 66 Beta: CSS Typed Object Model, Async Clipboard API, AudioWorklet&url=https://blog.chromium.org/2018/03/chrome-66-beta-css-typed-object-model.html&via=ChromiumDev'> <img alt='Share on Twitter' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_twitter_black_24dp.png' width='24'/> </span> <span class='fb-custom social-wrapper' 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href='https://blog.chromium.org/search/label/chromedevtools'> chromedevtools </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chromeframe'> chromeframe </a> <span dir='ltr'> 3 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chromeos'> chromeos </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chromeos.dev'> chromeos.dev </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chromium'> chromium </a> <span dir='ltr'> 9 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/cloud%20print'> cloud print </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/coalition'> coalition </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/coalition%20for%20better%20ads'> coalition for better ads </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/contact%20picker'> contact picker </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/content%20indexing'> content indexing </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/cookies'> cookies </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/core%20web%20vitals'> core web vitals </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/csrf'> csrf </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/css'> css </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/cumulative%20layout%20shift'> cumulative layout shift </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/custom%20tabs'> custom tabs </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/dart'> dart </a> <span dir='ltr'> 8 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/dashboard'> dashboard </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Data%20Saver'> Data Saver </a> <span dir='ltr'> 3 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Data%20saver%20desktop%20extension'> Data saver desktop extension </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/day%202'> day 2 </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/deceptive%20installation'> deceptive installation </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/declarative%20net%20request%20api'> declarative net request api </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/design'> design </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/developer%20dashboard'> developer dashboard </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Developer%20Program%20Policy'> Developer Program Policy </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/developer%20website'> developer website </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/devtools'> devtools </a> <span dir='ltr'> 13 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/digital%20event'> digital event </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/discoverability'> discoverability </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/DNS-over-HTTPS'> DNS-over-HTTPS </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/DoH'> DoH </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/emoji'> emoji </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/emscriptem'> emscriptem </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/enterprise'> enterprise </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/extensions'> extensions </a> <span dir='ltr'> 27 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Fast%20badging'> Fast badging </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/faster%20web'> faster web </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/features'> features </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/feedback'> feedback </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/field%20data'> field data </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/first%20input%20delay'> first input delay </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Follow'> Follow </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/fonts'> fonts </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/form%20controls'> form controls </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/frameworks'> frameworks </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/fugu'> fugu </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/fund'> fund </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/funding'> funding </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/gdd'> gdd </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/google%20earth'> google earth </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/google%20event'> google event </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/google%20io%202019'> google io 2019 </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/google%20web%20developer'> google web developer </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/googlechrome'> googlechrome </a> <span dir='ltr'> 12 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/harmful%20ads'> harmful ads </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/html5'> html5 </a> <span dir='ltr'> 11 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/HTTP%2F3'> HTTP/3 </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/HTTPS'> HTTPS </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/iframes'> iframes </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/images'> images </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/incognito'> incognito </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/insecure%20forms'> insecure forms </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/intent%20to%20explain'> intent to explain </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/ios'> ios </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/ios%20Chrome'> ios Chrome </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/issue%20tracker'> issue tracker </a> <span dir='ltr'> 3 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/jank'> jank </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/javascript'> javascript </a> <span dir='ltr'> 5 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/lab%20data'> lab data </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/labelling'> labelling </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/largest%20contentful%20paint'> largest contentful paint </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/launch'> launch </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/lazy-loading'> lazy-loading </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/lighthouse'> lighthouse </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/linux'> linux </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Lite%20Mode'> Lite Mode </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Lite%20pages'> Lite pages </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/loading%20interventions'> loading interventions </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/loading%20optimizations'> loading optimizations </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/lock%20icon'> lock icon </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/long-tail'> long-tail </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/mac'> mac </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/manifest%20v3'> manifest v3 </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/metrics'> metrics </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/microsoft%20edge'> microsoft edge </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/mixed%20forms'> mixed forms </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/mobile'> mobile </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/na'> na </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/native%20client'> native client </a> <span dir='ltr'> 8 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/native%20file%20system'> native file system </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/New%20Features'> New Features </a> <span dir='ltr'> 5 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/notifications'> notifications </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/octane'> octane </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/open%20web'> open web </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/origin%20trials'> origin trials </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/pagespeed%20insights'> pagespeed insights </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/pagespeedinsights'> pagespeedinsights </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/passwords'> passwords </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/payment%20handler'> payment handler </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/payment%20request'> payment request </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/payments'> payments </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/performance'> performance </a> <span dir='ltr'> 20 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/performance%20tools'> performance tools </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/permission%20UI'> permission UI </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/permissions'> permissions </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/play%20store'> play store </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/portals'> portals </a> <span dir='ltr'> 3 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/prefetching'> prefetching </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/privacy'> privacy </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/privacy%20sandbox'> privacy sandbox </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/private%20prefetch%20proxy'> private prefetch proxy </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/profile%20guided%20optimization'> profile guided optimization </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/progressive%20web%20apps'> progressive web apps </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Project%20Strobe'> Project Strobe </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/protection'> protection </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/pwa'> pwa </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/QUIC'> QUIC </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/quieter%20permissions'> quieter permissions </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/releases'> releases </a> <span dir='ltr'> 3 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/removals'> removals </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/rlz'> rlz </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/root%20program'> root program </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/safe%20browsing'> safe browsing </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Secure%20DNS'> Secure DNS </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/security'> security </a> <span dir='ltr'> 36 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/site%20isolation'> site isolation </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/slow%20loading'> slow loading </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/sms%20receiver'> sms receiver </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/spam%20policy'> spam policy </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/spdy'> spdy </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/spectre'> spectre </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/speed'> speed </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/ssl'> ssl </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/store%20listing'> store listing </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/strobe'> strobe </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/subscription%20pages'> subscription pages </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/suspicious%20site%20reporter%20extension'> suspicious site reporter extension </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/TCP'> TCP </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/the%20fast%20and%20the%20curious'> the fast and the curious </a> <span dir='ltr'> 23 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/TLS'> TLS </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/tools'> tools </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/tracing'> tracing </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/transparency'> transparency </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/trusted%20web%20activities'> trusted web activities </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/twa'> twa </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/user%20agent%20string'> user agent string </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/user%20data%20policy'> user data policy </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/v8'> v8 </a> <span dir='ltr'> 6 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/video'> video </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/wasm'> wasm </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/web'> web </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/web%20apps'> web apps </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/web%20assembly'> web assembly </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/web%20developers'> web developers </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/web%20intents'> web intents </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/web%20packaging'> web packaging </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/web%20payments'> web payments </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/web%20platform'> web platform </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/web%20request%20api'> web request api </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/web%20vitals'> web vitals 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href='https://blog.chromium.org/2020/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2020/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2020/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2020/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i 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<div class=''> <a class='post-count-link' href='https://blog.chromium.org/2019/08/'> Aug </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2019/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2019/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2019/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2019/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2019/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2019/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2019/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate expanded'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy toggle-open'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2018/'> 2018 </a> </div> <div class='items'> <ul 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class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2018/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2018/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2017/'> 2017 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2017/12/'> Dec </a> </div> 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class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2017/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2016/'> 2016 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2016/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' 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href='https://blog.chromium.org/2016/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2016/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2016/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2016/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2016/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> 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class=''> <a class='post-count-link' href='https://blog.chromium.org/2015/09/'> Sep </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2015/08/'> Aug </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2015/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2015/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2015/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> 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class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2013/'> 2013 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/11/'> Nov </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/10/'> Oct </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/09/'> Sep </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/08/'> Aug </a> </div> <div class='items'> </div> </li> 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class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2012/'> 2012 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/12/'> Dec </a> </div> 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class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2011/'> 2011 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/11/'> Nov </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/10/'> Oct </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/09/'> Sep </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/08/'> Aug </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2010/'> 2010 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2010/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2010/11/'> Nov </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2010/10/'> Oct </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2010/09/'> Sep </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2010/08/'> Aug </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2010/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2010/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2010/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2010/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2010/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2010/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2010/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate 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class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2009/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2009/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2009/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2008/'> 2008 </a> </div> <div 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style='margin-top: -16px;' width='92'/> </a> <ul> <li> <a href='//www.google.com/'> Google </a> </li> <li> <a href='//www.google.com/policies/privacy/'> Privacy </a> </li> <li> <a href='//www.google.com/policies/terms/'> Terms </a> </li> </ul> </div> </div> <script type='text/javascript'> //<![CDATA[ // Social sharing popups. var postEl = document.getElementsByClassName('social-wrapper'); var postCount = postEl.length; for(i=0; i<postCount;i++){ postEl[i].addEventListener("click", function(event){ var postUrl = this.getAttribute("data-href"); window.open( postUrl,'popUpWindow','height=500,width=500,left=10,top=10,resizable=yes,scrollbars=yes,toolbar=yes,menubar=no,location=no,directories=no,status=yes'); });} //]]> </script> <script type='text/javascript'> //<![CDATA[ var BreakpointHandler = function() { this.initted = false; this.isHomePage = false; this.isMobile = false; }; BreakpointHandler.prototype.finalizeSummary = function(summaryHtml, lastNode) { // Use $.trim for IE8 compatibility summaryHtml = $.trim(summaryHtml).replace(/(<br>|\s)+$/,''); if (lastNode.nodeType == 3) { var lastChar = summaryHtml.slice(-1); if (!lastChar.match(/[.”"?]/)) { if (!lastChar.match(/[A-Za-z]/)) { summaryHtml = summaryHtml.slice(0, -1); } summaryHtml += ' ...'; } } else if (lastNode.nodeType == 1 && (lastNode.nodeName == 'I' || lastNode.nodeName == 'A')) { summaryHtml += ' ...'; } return summaryHtml; }; BreakpointHandler.prototype.generateSummaryFromContent = function(content, numWords) { var seenWords = 0; var summaryHtml = ''; for (var i=0; i < content.childNodes.length; i++) { var node = content.childNodes[i]; var nodeText; if (node.nodeType == 1) { if (node.hasAttribute('data-about-pullquote')) { continue; } nodeText = node.textContent; if (nodeText === undefined) { // innerText for IE8 nodeText = node.innerText; } if (node.nodeName == 'DIV' || node.nodeName == 'B') { // Don't end early if we haven't seen enough words. if (seenWords < 10) { continue; } if (i > 0) { summaryHtml = this.finalizeSummary(summaryHtml, content.childNodes[i-1]); } break; } summaryHtml += node.outerHTML; } else if (node.nodeType == 3) { nodeText = node.nodeValue; summaryHtml += nodeText + ' '; } var words = nodeText.match(/\S+\s*/g); if (!words) { continue; } var remain = numWords - seenWords; if (words.length >= remain) { summaryHtml = this.finalizeSummary(summaryHtml, node); break; } seenWords += words.length; } return summaryHtml; }; BreakpointHandler.prototype.detect = function() { var match, pl = /\+/g, search = /([^&=]+)=?([^&]*)/g, decode = function (s) { return decodeURIComponent(s.replace(pl, " ")); }, query = window.location.search.substring(1); var urlParams = {}; while (match = search.exec(query)) urlParams[decode(match[1])] = decode(match[2]); this.isListPage = $('html').hasClass('list-page'); this.isMobile = urlParams['m'] === '1'; this.isHomePage = window.location.pathname == '/'; }; BreakpointHandler.prototype.initContent = function() { var self = this; $('.post').each(function(index) { var body = $(this).children('.post-body')[0]; var content = $(body).children('.post-content')[0]; $(content).addClass('post-original'); var data = $(content).children('script').html(); data = self.rewriteForSSL(data); // If exists, extract specified editor's preview. var match = data.match(/([\s\S]+?)<div data-is-preview.+?>([\s\S]+)<\/div>/m); if (match) { data = match[1]; } // Prevent big images from loading when they aren't needed. // This must be done as a pre-injection step, since image loading can't be // canceled once embedded into the DOM. if (self.isListPage && self.isMobile) { data = data.replace(/<(img|iframe) .+?>/g, ''); } // Insert template to be rendered as nodes. content.innerHTML = data; if (self.isListPage) { var summary = document.createElement('div'); $(summary).addClass('post-content'); $(summary).addClass('post-summary'); body.insertBefore(summary, content); if (match) { // Use provided summary. summary.innerHTML = match[2]; } 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