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<bdi>: The Bidirectional Isolate element - HTML: HyperText Markup Language | MDN
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Metadata in HTML</a></li> <li><a href="/en-US/docs/Learn/HTML/Introduction_to_HTML/HTML_text_fundamentals">HTML text fundamentals</a></li> <li><a href="/en-US/docs/Learn/HTML/Introduction_to_HTML/Creating_hyperlinks">Creating hyperlinks</a></li> <li><a href="/en-US/docs/Learn/HTML/Introduction_to_HTML/Advanced_text_formatting">Advanced text formatting</a></li> <li><a href="/en-US/docs/Learn/HTML/Introduction_to_HTML/Document_and_website_structure">Document and website structure</a></li> <li><a href="/en-US/docs/Learn/HTML/Introduction_to_HTML/Debugging_HTML">Debugging HTML</a></li> <li><a href="/en-US/docs/Learn/HTML/Introduction_to_HTML/Marking_up_a_letter">Assessment: Marking up a letter</a></li> <li><a href="/en-US/docs/Learn/HTML/Introduction_to_HTML/Structuring_a_page_of_content">Assessment: Structuring a page of content</a></li> </ol> </details> </li> <li class="toggle"> <details> <summary>Multimedia and embedding</summary> <ol> <li><a href="/en-US/docs/Learn/HTML/Multimedia_and_embedding">Multimedia and embedding overview</a></li> <li><a href="/en-US/docs/Learn/HTML/Multimedia_and_embedding/Images_in_HTML">Images in HTML</a></li> <li><a href="/en-US/docs/Learn/HTML/Multimedia_and_embedding/Video_and_audio_content">Video and audio content</a></li> <li><a href="/en-US/docs/Learn/HTML/Multimedia_and_embedding/Other_embedding_technologies">From object to iframe — other embedding technologies</a></li> <li><a href="/en-US/docs/Learn/HTML/Multimedia_and_embedding/Adding_vector_graphics_to_the_Web">Adding vector graphics to the web</a></li> <li><a href="/en-US/docs/Learn/HTML/Multimedia_and_embedding/Responsive_images">Responsive images</a></li> <li><a href="/en-US/docs/Learn/HTML/Multimedia_and_embedding/Mozilla_splash_page">Assessment: Mozilla splash page</a></li> </ol> </details> </li> <li class="toggle"> <details> <summary>HTML tables</summary> <ol> <li><a href="/en-US/docs/Learn/HTML/Tables">HTML tables overview</a></li> <li><a href="/en-US/docs/Learn/HTML/Tables/Basics">HTML table basics</a></li> <li><a href="/en-US/docs/Learn/HTML/Tables/Advanced">HTML table advanced features and accessibility</a></li> <li><a href="/en-US/docs/Learn/HTML/Tables/Structuring_planet_data">Assessment: Structuring planet data</a></li> </ol> </details> </li> <li class="section"><a href="/en-US/docs/Web/HTML/Reference">References</a></li> <li class="toggle"> <details open=""> <summary>HTML elements</summary> <ol><li><a href="/en-US/docs/Web/HTML/Element/a"><code><a></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/abbr"><code><abbr></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/acronym"><code><acronym></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Element/address"><code><address></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/area"><code><area></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/article"><code><article></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/aside"><code><aside></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/audio"><code><audio></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/b"><code><b></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/base"><code><base></code></a></li><li><em><a href="/en-US/docs/Web/HTML/Element/bdi" aria-current="page"><code><bdi></code></a></em></li><li><a href="/en-US/docs/Web/HTML/Element/bdo"><code><bdo></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/big"><code><big></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Element/blockquote"><code><blockquote></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/body"><code><body></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/br"><code><br></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/button"><code><button></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/canvas"><code><canvas></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/caption"><code><caption></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/center"><code><center></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Element/cite"><code><cite></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/code"><code><code></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/col"><code><col></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/colgroup"><code><colgroup></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/data"><code><data></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/datalist"><code><datalist></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/dd"><code><dd></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/del"><code><del></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/details"><code><details></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/dfn"><code><dfn></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/dialog"><code><dialog></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/dir"><code><dir></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Element/div"><code><div></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/dl"><code><dl></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/dt"><code><dt></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/em"><code><em></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/embed"><code><embed></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/fencedframe"><code><fencedframe></code></a><abbr class="icon icon-experimental" title="Experimental. Expect behavior to change in the future."> <span class="visually-hidden">Experimental</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Element/fieldset"><code><fieldset></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/figcaption"><code><figcaption></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/figure"><code><figure></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/font"><code><font></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Element/footer"><code><footer></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/form"><code><form></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/frame"><code><frame></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Element/frameset"><code><frameset></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Element/Heading_Elements"><code><h1></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/head"><code><head></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/header"><code><header></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/hgroup"><code><hgroup></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/hr"><code><hr></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/html"><code><html></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/i"><code><i></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/iframe"><code><iframe></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/img"><code><img></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input"><code><input></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/ins"><code><ins></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/kbd"><code><kbd></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/label"><code><label></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/legend"><code><legend></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/li"><code><li></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/link"><code><link></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/main"><code><main></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/map"><code><map></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/mark"><code><mark></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/marquee"><code><marquee></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Element/menu"><code><menu></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/meta"><code><meta></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/meter"><code><meter></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/nav"><code><nav></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/nobr"><code><nobr></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Element/noembed"><code><noembed></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Element/noframes"><code><noframes></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Element/noscript"><code><noscript></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/object"><code><object></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/ol"><code><ol></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/optgroup"><code><optgroup></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/option"><code><option></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/output"><code><output></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/p"><code><p></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/param"><code><param></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Element/picture"><code><picture></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/plaintext"><code><plaintext></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Element/portal"><code><portal></code></a><abbr class="icon icon-experimental" title="Experimental. Expect behavior to change in the future."> <span class="visually-hidden">Experimental</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Element/pre"><code><pre></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/progress"><code><progress></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/q"><code><q></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/rb"><code><rb></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Element/rp"><code><rp></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/rt"><code><rt></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/rtc"><code><rtc></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Element/ruby"><code><ruby></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/s"><code><s></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/samp"><code><samp></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/script"><code><script></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/search"><code><search></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/section"><code><section></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/select"><code><select></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/slot"><code><slot></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/small"><code><small></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/source"><code><source></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/span"><code><span></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/strike"><code><strike></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Element/strong"><code><strong></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/style"><code><style></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/sub"><code><sub></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/summary"><code><summary></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/sup"><code><sup></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/table"><code><table></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/tbody"><code><tbody></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/td"><code><td></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/template"><code><template></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/textarea"><code><textarea></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/tfoot"><code><tfoot></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/th"><code><th></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/thead"><code><thead></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/time"><code><time></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/title"><code><title></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/tr"><code><tr></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/track"><code><track></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/tt"><code><tt></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Element/u"><code><u></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/ul"><code><ul></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/var"><code><var></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/video"><code><video></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/wbr"><code><wbr></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/xmp"><code><xmp></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li></ol> </details> </li> <li class="toggle"> <details> <summary>Global attributes</summary> <ol><li><a href="/en-US/docs/Web/HTML/Global_attributes/accesskey"><code>accesskey</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/anchor"><code>anchor</code></a><abbr class="icon icon-experimental" title="Experimental. Expect behavior to change in the future."> <span class="visually-hidden">Experimental</span> </abbr><abbr class="icon icon-nonstandard" title="Non-standard. Check cross-browser support before using."> <span class="visually-hidden">Non-standard</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/autocapitalize"><code>autocapitalize</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/autocorrect"><code>autocorrect</code></a><abbr class="icon icon-experimental" title="Experimental. Expect behavior to change in the future."> <span class="visually-hidden">Experimental</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/autofocus"><code>autofocus</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/class"><code>class</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/contenteditable"><code>contenteditable</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/data-*"><code>data-*</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/dir"><code>dir</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/draggable"><code>draggable</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/enterkeyhint"><code>enterkeyhint</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/exportparts"><code>exportparts</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/hidden"><code>hidden</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/id"><code>id</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/inert"><code>inert</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/inputmode"><code>inputmode</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/is"><code>is</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/itemid"><code>itemid</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/itemprop"><code>itemprop</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/itemref"><code>itemref</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/itemscope"><code>itemscope</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/itemtype"><code>itemtype</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/lang"><code>lang</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/nonce"><code>nonce</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/part"><code>part</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/popover"><code>popover</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/slot"><code>slot</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/spellcheck"><code>spellcheck</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/style"><code>style</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/tabindex"><code>tabindex</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/title"><code>title</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/translate"><code>translate</code></a></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/virtualkeyboardpolicy"><code>virtualkeyboardpolicy</code></a><abbr class="icon icon-experimental" title="Experimental. Expect behavior to change in the future."> <span class="visually-hidden">Experimental</span> </abbr></li><li><a href="/en-US/docs/Web/HTML/Global_attributes/writingsuggestions"><code>writingsuggestions</code></a></li></ol> </details> </li> <li class="toggle"> <details> <summary>Attributes</summary> <ol> <li><a href="/en-US/docs/Web/HTML/Attributes/accept">accept</a></li> <li><a href="/en-US/docs/Web/HTML/Attributes/autocomplete">autocomplete</a></li> <li><a href="/en-US/docs/Web/HTML/Attributes/capture">capture</a></li> <li><a href="/en-US/docs/Web/HTML/Attributes/crossorigin">crossorigin</a></li> <li><a href="/en-US/docs/Web/HTML/Attributes/dirname">dirname</a></li> <li><a href="/en-US/docs/Web/HTML/Attributes/disabled">disabled</a></li> <li><a href="/en-US/docs/Web/HTML/Attributes/elementtiming">elementtiming</a></li> <li><a href="/en-US/docs/Web/HTML/Attributes/for">for</a></li> <li><a href="/en-US/docs/Web/HTML/Attributes/max">max</a></li> <li><a href="/en-US/docs/Web/HTML/Attributes/maxlength">maxlength</a></li> <li><a href="/en-US/docs/Web/HTML/Attributes/min">min</a></li> <li><a href="/en-US/docs/Web/HTML/Attributes/minlength">minlength</a></li> <li><a href="/en-US/docs/Web/HTML/Attributes/multiple">multiple</a></li> <li><a href="/en-US/docs/Web/HTML/Attributes/pattern">pattern</a></li> <li><a href="/en-US/docs/Web/HTML/Attributes/placeholder">placeholder</a></li> <li><a href="/en-US/docs/Web/HTML/Attributes/readonly">readonly</a></li> <li><a href="/en-US/docs/Web/HTML/Attributes/rel">rel</a></li> <li><a href="/en-US/docs/Web/HTML/Attributes/required">required</a></li> <li><a href="/en-US/docs/Web/HTML/Attributes/size">size</a></li> <li><a href="/en-US/docs/Web/HTML/Attributes/step">step</a></li> </ol> </details> </li> <li class="toggle"> <details> <summary><code><input></code> types</summary> <ol><li><a href="/en-US/docs/Web/HTML/Element/input/button"><code><input type="button"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/checkbox"><code><input type="checkbox"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/color"><code><input type="color"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/date"><code><input type="date"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/datetime-local"><code><input type="datetime-local"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/email"><code><input type="email"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/file"><code><input type="file"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/hidden"><code><input type="hidden"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/image"><code><input type="image"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/month"><code><input type="month"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/number"><code><input type="number"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/password"><code><input type="password"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/radio"><code><input type="radio"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/range"><code><input type="range"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/reset"><code><input type="reset"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/search"><code><input type="search"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/submit"><code><input type="submit"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/tel"><code><input type="tel"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/text"><code><input type="text"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/time"><code><input type="time"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/url"><code><input type="url"></code></a></li><li><a href="/en-US/docs/Web/HTML/Element/input/week"><code><input type="week"></code></a></li></ol> </details> </li> <li class="section no-link">Guides</li> <li> <ol> <li><a href="/en-US/docs/Web/HTML/Content_categories">Content categories</a></li> <li><a href="/en-US/docs/Glossary/Block-level_content">Block-level elements</a></li> <li><a href="/en-US/docs/Glossary/Inline-level_content">Inline elements</a></li> <li><a href="/en-US/docs/Web/HTML/Quirks_Mode_and_Standards_Mode">Quirks Mode and Standards Mode</a></li> <li><a href="/en-US/docs/Web/HTML/Date_and_time_formats">Date and time formats used in HTML</a></li> <li><a href="/en-US/docs/Web/HTML/Constraint_validation">Constraint validation</a></li> <li><a href="/en-US/docs/Web/HTML/Microdata">Microdata</a></li> <li><a href="/en-US/docs/Web/HTML/microformats">Microformats</a></li> <li><a href="/en-US/docs/Web/HTML/Viewport_meta_tag">Viewport meta tag</a></li> <li><a href="/en-US/docs/Web/HTML/CORS_enabled_image">Allowing cross-origin use of images and canvas</a></li> </ol> </li> </ol> </div></div><section class="place side"></section></nav></aside><div class="toc-container"><aside class="toc"><nav><div class="document-toc-container"><section class="document-toc"><header><h2 class="document-toc-heading">In this article</h2></header><ul class="document-toc-list"><li class="document-toc-item "><a class="document-toc-link" href="#try_it">Try it</a></li><li class="document-toc-item "><a class="document-toc-link" href="#attributes">Attributes</a></li><li class="document-toc-item "><a class="document-toc-link" href="#examples">Examples</a></li><li class="document-toc-item "><a class="document-toc-link" href="#technical_summary">Technical summary</a></li><li class="document-toc-item "><a class="document-toc-link" href="#specifications">Specifications</a></li><li class="document-toc-item "><a class="document-toc-link" href="#browser_compatibility">Browser compatibility</a></li><li class="document-toc-item "><a class="document-toc-link" href="#see_also">See also</a></li></ul></section></div></nav></aside><section class="place side"></section></div></div><main id="content" class="main-content "><article class="main-page-content" lang="en-US"><header><h1><bdi>: The Bidirectional Isolate element</h1><details class="baseline-indicator high"><summary><span class="indicator" role="img" aria-label="Baseline Check"></span><h2>Baseline<!-- --> <span class="not-bold">Widely available</span></h2><div class="browsers"><span class="engine" title="Supported in Chrome and Edge"><span class="browser chrome supported" role="img" aria-label="Chrome check"></span><span class="browser edge supported" role="img" aria-label="Edge check"></span></span><span class="engine" title="Supported in Firefox"><span class="browser firefox supported" role="img" aria-label="Firefox check"></span></span><span class="engine" title="Supported in Safari"><span class="browser safari supported" role="img" aria-label="Safari check"></span></span></div><span class="icon icon-chevron "></span></summary><div class="extra"><p>This feature is well established and works across many devices and browser versions. It’s been available across browsers since<!-- --> <!-- -->January 2020<!-- -->.</p><ul><li><a href="/en-US/docs/Glossary/Baseline/Compatibility" data-glean="baseline_link_learn_more" target="_blank" class="learn-more">Learn more</a></li><li><a href="#browser_compatibility" data-glean="baseline_link_bcd_table">See full compatibility</a></li><li><a href="https://survey.alchemer.com/s3/7634825/MDN-baseline-feedback?page=%2Fen-US%2Fdocs%2FWeb%2FHTML%2FElement%2Fbdi&level=high" data-glean="baseline_link_feedback" class="feedback-link" target="_blank" rel="noreferrer">Report feedback</a></li></ul></div></details></header><div class="section-content"><p>The <strong><code><bdi></code></strong> <a href="/en-US/docs/Web/HTML">HTML</a> element tells the browser's bidirectional algorithm to treat the text it contains in isolation from its surrounding text. It's particularly useful when a website dynamically inserts some text and doesn't know the directionality of the text being inserted.</p></div><section aria-labelledby="try_it"><h2 id="try_it"><a href="#try_it">Try it</a></h2><div class="section-content"><iframe class="interactive is-tabbed-standard-height" height="200" src="https://interactive-examples.mdn.mozilla.net/pages/tabbed/bdi.html" title="MDN Web Docs Interactive Example" allow="clipboard-write" loading="lazy"></iframe> <p>Bidirectional text is text that may contain both sequences of characters that are arranged left-to-right (LTR) and sequences of characters that are arranged right-to-left (RTL), such as an Arabic quotation embedded in an English string. Browsers implement the <a href="https://www.w3.org/International/articles/inline-bidi-markup/uba-basics" class="external" target="_blank">Unicode Bidirectional Algorithm</a> to handle this. In this algorithm, characters are given an implicit directionality: for example, Latin characters are treated as LTR while Arabic characters are treated as RTL. Some other characters (such as spaces and some punctuation) are treated as neutral and are assigned directionality based on that of their surrounding characters.</p> <p>Usually, the bidirectional algorithm will do the right thing without the author having to provide any special markup but, occasionally, the algorithm needs help. That's where <code><bdi></code> comes in.</p> <p>The <code><bdi></code> element is used to wrap a span of text and instructs the bidirectional algorithm to treat this text in isolation from its surroundings. This works in two ways:</p> <ul> <li>The directionality of text embedded in <code><bdi></code> <em>does not influence</em> the directionality of the surrounding text.</li> <li>The directionality of text embedded in <code><bdi></code> <em>is not influenced by</em> the directionality of the surrounding text.</li> </ul> <p>For example, consider some text like:</p> <pre class="brush: plain notranslate">EMBEDDED-TEXT - 1st place </pre> <p>If <code>EMBEDDED-TEXT</code> is LTR, this works fine. But if <code>EMBEDDED-TEXT</code> is RTL, then <code>- 1</code> will be treated as RTL text (because it consists of neutral and weak characters). The result will be garbled:</p> <pre class="brush: plain notranslate">1 - EMBEDDED-TEXTst place </pre> <p>If you know the directionality of <code>EMBEDDED-TEXT</code> in advance, you can fix this problem by wrapping <code>EMBEDDED-TEXT</code> in a <a href="/en-US/docs/Web/HTML/Element/span"><code><span></code></a> with the <a href="/en-US/docs/Web/HTML/Global_attributes/dir"><code>dir</code></a> attribute set to the known directionality. But if you don't know the directionality - for example, because <code>EMBEDDED-TEXT</code> is being read from a database or entered by the user - you should use <code><bdi></code> to prevent the directionality of <code>EMBEDDED-TEXT</code> from affecting its surroundings.</p> <p>Though the same visual effect can be achieved using the CSS rule <a href="/en-US/docs/Web/CSS/unicode-bidi"><code>unicode-bidi: isolate</code></a> on a <a href="/en-US/docs/Web/HTML/Element/span"><code><span></code></a> or another text-formatting element, HTML authors should not use this approach because it is not semantic and browsers are allowed to ignore CSS styling.</p> <p>Embedding the characters in <code><span dir="auto"></code> has the same effect as using <code><bdi></code>, but its semantics are less clear.</p></div></section><section aria-labelledby="attributes"><h2 id="attributes"><a href="#attributes">Attributes</a></h2><div class="section-content"><p>Like all other HTML elements, this element supports the <a href="/en-US/docs/Web/HTML/Global_attributes">global attributes</a>, except that the <a href="/en-US/docs/Web/HTML/Global_attributes/dir"><code>dir</code></a> attribute behaves differently than normal: it defaults to <code>auto</code>, meaning its value is never inherited from the parent element. This means that unless you specify a value of either <code>rtl</code> or <code>ltr</code> for <code>dir</code>, the <a href="/en-US/docs/Glossary/User_agent">user agent</a> will determine the correct directionality to use based on the contents of the <code><bdi></code>.</p></div></section><section aria-labelledby="examples"><h2 id="examples"><a href="#examples">Examples</a></h2><div class="section-content"></div></section><section aria-labelledby="no_bdi_with_only_ltr"><h3 id="no_bdi_with_only_ltr"><a href="#no_bdi_with_only_ltr">No bdi with only LTR</a></h3><div class="section-content"><p>This example lists the winners of a competition using <a href="/en-US/docs/Web/HTML/Element/span"><code><span></code></a> elements only. When the names only contain LTR text the results look fine:</p> <div class="code-example"><div class="example-header"><span class="language-name">html</span></div><pre class="brush: html notranslate"><code><ul> <li><span class="name">Henrietta Boffin</span> - 1st place</li> <li><span class="name">Jerry Cruncher</span> - 2nd place</li> </ul> </code></pre></div> <div class="code-example"><pre class="brush: css hidden notranslate"><code>body { border: 1px solid #3f87a6; max-width: calc(100% - 40px - 6px); padding: 20px; width: calc(100% - 40px - 6px); border-width: 1px 1px 1px 5px; } </code></pre></div><div class="code-example"><div class="example-header"></div><iframe class="sample-code-frame" title="No bdi with only LTR sample" id="frame_no_bdi_with_only_ltr" height="120" src="about:blank" data-live-path="/en-US/docs/Web/HTML/Element/bdi" data-live-id="no_bdi_with_only_ltr" sandbox="allow-same-origin allow-scripts" loading="lazy"></iframe></div></div></section><section aria-labelledby="no_bdi_with_rtl_text"><h3 id="no_bdi_with_rtl_text"><a href="#no_bdi_with_rtl_text">No bdi with RTL text</a></h3><div class="section-content"><p>This example lists the winners of a competition using <a href="/en-US/docs/Web/HTML/Element/span"><code><span></code></a> elements only, and one of the winners has a name consisting of RTL text. In this case the <code>- 1</code>, which consists of characters with neutral or weak directionality, will adopt the directionality of the RTL text, and the result will be garbled:</p> <div class="code-example"><div class="example-header"><span class="language-name">html</span></div><pre class="brush: html notranslate"><code><ul> <li><span class="name">اَلأَعْشَى</span> - 1st place</li> <li><span class="name">Jerry Cruncher</span> - 2nd place</li> </ul> </code></pre></div> <div class="code-example"><pre class="brush: css hidden notranslate"><code>body { border: 1px solid #3f87a6; max-width: calc(100% - 40px - 6px); padding: 20px; width: calc(100% - 40px - 6px); border-width: 1px 1px 1px 5px; } </code></pre></div><div class="code-example"><div class="example-header"></div><iframe class="sample-code-frame" title="No bdi with RTL text sample" id="frame_no_bdi_with_rtl_text" height="120" src="about:blank" data-live-path="/en-US/docs/Web/HTML/Element/bdi" data-live-id="no_bdi_with_rtl_text" sandbox="allow-same-origin allow-scripts" loading="lazy"></iframe></div></div></section><section aria-labelledby="using_bdi_with_ltr_and_rtl_text"><h3 id="using_bdi_with_ltr_and_rtl_text"><a href="#using_bdi_with_ltr_and_rtl_text">Using bdi with LTR and RTL text</a></h3><div class="section-content"><p>This example lists the winners of a competition using <code><bdi></code> elements. These elements instruct the browser to treat the name in isolation from its embedding context, so the example output is properly ordered:</p> <div class="code-example"><div class="example-header"><span class="language-name">html</span></div><pre class="brush: html notranslate"><code><ul> <li><bdi class="name">اَلأَعْشَى</bdi> - 1st place</li> <li><bdi class="name">Jerry Cruncher</bdi> - 2nd place</li> </ul> </code></pre></div> <div class="code-example"><pre class="brush: css hidden notranslate"><code>body { border: 1px solid #3f87a6; max-width: calc(100% - 40px - 6px); padding: 20px; width: calc(100% - 40px - 6px); border-width: 1px 1px 1px 5px; } </code></pre></div><div class="code-example"><div class="example-header"></div><iframe class="sample-code-frame" title="Using bdi with LTR and RTL text sample" id="frame_using_bdi_with_ltr_and_rtl_text" height="120" src="about:blank" data-live-path="/en-US/docs/Web/HTML/Element/bdi" data-live-id="using_bdi_with_ltr_and_rtl_text" sandbox="allow-same-origin allow-scripts" loading="lazy"></iframe></div></div></section><section aria-labelledby="technical_summary"><h2 id="technical_summary"><a href="#technical_summary">Technical summary</a></h2><div class="section-content"><figure class="table-container"><table class="properties"> <tbody> <tr> <th scope="row"><a href="/en-US/docs/Web/HTML/Content_categories">Content categories</a></th> <td> <a href="/en-US/docs/Web/HTML/Content_categories#flow_content">Flow content</a>, <a href="/en-US/docs/Web/HTML/Content_categories#phrasing_content">phrasing content</a>, palpable content. </td> </tr> <tr> <th scope="row">Permitted content</th> <td><a href="/en-US/docs/Web/HTML/Content_categories#phrasing_content">Phrasing content</a>.</td> </tr> <tr> <th scope="row">Tag omission</th> <td>None, both the starting and ending tag are mandatory.</td> </tr> <tr> <th scope="row">Permitted parents</th> <td> Any element that accepts <a href="/en-US/docs/Web/HTML/Content_categories#phrasing_content">phrasing content</a>. </td> </tr> <tr> <th scope="row">Implicit ARIA role</th> <td><code><a href="/en-US/docs/Web/Accessibility/ARIA/Roles/generic_role">generic</a></code></td> </tr> <tr> <th scope="row">Permitted ARIA roles</th> <td>Any</td> </tr> <tr> <th scope="row">DOM interface</th> <td><a href="/en-US/docs/Web/API/HTMLElement"><code>HTMLElement</code></a></td> </tr> </tbody> </table></figure></div></section><h2 id="specifications"><a href="#specifications">Specifications</a></h2><table class="standard-table"><thead><tr><th scope="col">Specification</th></tr></thead><tbody><tr><td><a href="https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-bdi-element">HTML Standard<!-- --> <br/><small># <!-- -->the-bdi-element</small></a></td></tr></tbody></table><h2 id="browser_compatibility"><a href="#browser_compatibility">Browser compatibility</a></h2><p>BCD tables only load in the browser<noscript> <!-- -->with JavaScript enabled. Enable JavaScript to view data.</noscript></p><section aria-labelledby="see_also"><h2 id="see_also"><a href="#see_also">See also</a></h2><div class="section-content"><ul> <li><a href="https://www.w3.org/International/articles/inline-bidi-markup/" class="external" target="_blank">Inline markup and bidirectional text in HTML</a></li> <li><a href="https://www.w3.org/International/articles/inline-bidi-markup/uba-basics" class="external" target="_blank">Unicode Bidirectional Algorithm basics</a></li> <li><a href="/en-US/docs/Glossary/Localization">Localization</a></li> <li>Related HTML element: <a href="/en-US/docs/Web/HTML/Element/bdo"><code><bdo></code></a></li> <li>Related CSS properties: <a href="/en-US/docs/Web/CSS/direction"><code>direction</code></a>, <a href="/en-US/docs/Web/CSS/unicode-bidi"><code>unicode-bidi</code></a></li> </ul></div></section></article><aside class="article-footer"><div class="article-footer-inner"><div class="svg-container"><svg 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Content available under<!-- --> <a href="/en-US/docs/MDN/Writing_guidelines/Attrib_copyright_license">a Creative Commons license</a>.</p></div></div></footer></div><script type="application/json" id="hydration">{"url":"/en-US/docs/Web/HTML/Element/bdi","doc":{"isMarkdown":true,"isTranslated":false,"isActive":true,"flaws":{},"title":"<bdi>: The Bidirectional Isolate element","mdn_url":"/en-US/docs/Web/HTML/Element/bdi","locale":"en-US","native":"English (US)","browserCompat":["html.elements.bdi"],"baseline":{"baseline":"high","baseline_high_date":"2022-07-15","baseline_low_date":"2020-01-15","support":{"chrome":"16","chrome_android":"18","edge":"79","firefox":"10","firefox_android":"10","safari":"6","safari_ios":"6"}},"sidebarHTML":"\n <ol>\n <li class=\"section\"><a href=\"/en-US/docs/Web/HTML\">HTML</a></li>\n <li class=\"section\"><a href=\"/en-US/docs/Learn/HTML\">Tutorials</a></li>\n <li><a href=\"/en-US/docs/Learn/Getting_started_with_the_web/HTML_basics\">HTML basics</a></li>\n <li class=\"toggle\">\n <details>\n <summary>Introduction to HTML</summary>\n <ol>\n <li><a href=\"/en-US/docs/Learn/HTML/Introduction_to_HTML\">Introduction to HTML overview</a></li>\n <li><a href=\"/en-US/docs/Learn/HTML/Introduction_to_HTML/Getting_started\">Getting started with HTML</a></li>\n <li><a href=\"/en-US/docs/Learn/HTML/Introduction_to_HTML/The_head_metadata_in_HTML\">What's in the head? Metadata in HTML</a></li>\n <li><a href=\"/en-US/docs/Learn/HTML/Introduction_to_HTML/HTML_text_fundamentals\">HTML text fundamentals</a></li>\n <li><a href=\"/en-US/docs/Learn/HTML/Introduction_to_HTML/Creating_hyperlinks\">Creating hyperlinks</a></li>\n <li><a href=\"/en-US/docs/Learn/HTML/Introduction_to_HTML/Advanced_text_formatting\">Advanced text formatting</a></li>\n <li><a href=\"/en-US/docs/Learn/HTML/Introduction_to_HTML/Document_and_website_structure\">Document and website structure</a></li>\n <li><a href=\"/en-US/docs/Learn/HTML/Introduction_to_HTML/Debugging_HTML\">Debugging HTML</a></li>\n <li><a href=\"/en-US/docs/Learn/HTML/Introduction_to_HTML/Marking_up_a_letter\">Assessment: Marking up a letter</a></li>\n <li><a href=\"/en-US/docs/Learn/HTML/Introduction_to_HTML/Structuring_a_page_of_content\">Assessment: Structuring a page of content</a></li>\n </ol>\n </details>\n </li>\n <li class=\"toggle\">\n <details>\n <summary>Multimedia and embedding</summary>\n <ol>\n <li><a href=\"/en-US/docs/Learn/HTML/Multimedia_and_embedding\">Multimedia and embedding overview</a></li>\n <li><a href=\"/en-US/docs/Learn/HTML/Multimedia_and_embedding/Images_in_HTML\">Images in HTML</a></li>\n <li><a href=\"/en-US/docs/Learn/HTML/Multimedia_and_embedding/Video_and_audio_content\">Video and audio content</a></li>\n <li><a href=\"/en-US/docs/Learn/HTML/Multimedia_and_embedding/Other_embedding_technologies\">From object to iframe — other embedding technologies</a></li>\n <li><a href=\"/en-US/docs/Learn/HTML/Multimedia_and_embedding/Adding_vector_graphics_to_the_Web\">Adding vector graphics to the web</a></li>\n <li><a href=\"/en-US/docs/Learn/HTML/Multimedia_and_embedding/Responsive_images\">Responsive images</a></li>\n <li><a href=\"/en-US/docs/Learn/HTML/Multimedia_and_embedding/Mozilla_splash_page\">Assessment: Mozilla splash page</a></li>\n </ol>\n </details>\n </li>\n <li class=\"toggle\">\n <details>\n <summary>HTML tables</summary>\n <ol>\n <li><a href=\"/en-US/docs/Learn/HTML/Tables\">HTML tables overview</a></li>\n <li><a href=\"/en-US/docs/Learn/HTML/Tables/Basics\">HTML table basics</a></li>\n <li><a href=\"/en-US/docs/Learn/HTML/Tables/Advanced\">HTML table advanced features and accessibility</a></li>\n <li><a href=\"/en-US/docs/Learn/HTML/Tables/Structuring_planet_data\">Assessment: Structuring planet data</a></li>\n </ol>\n </details>\n </li>\n <li class=\"section\"><a href=\"/en-US/docs/Web/HTML/Reference\">References</a></li>\n <li class=\"toggle\">\n <details open=\"\">\n <summary>HTML elements</summary>\n <ol><li><a href=\"/en-US/docs/Web/HTML/Element/a\"><code><a></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/abbr\"><code><abbr></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/acronym\"><code><acronym></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Element/address\"><code><address></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/area\"><code><area></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/article\"><code><article></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/aside\"><code><aside></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/audio\"><code><audio></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/b\"><code><b></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/base\"><code><base></code></a></li><li><em><a href=\"/en-US/docs/Web/HTML/Element/bdi\" aria-current=\"page\"><code><bdi></code></a></em></li><li><a href=\"/en-US/docs/Web/HTML/Element/bdo\"><code><bdo></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/big\"><code><big></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Element/blockquote\"><code><blockquote></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/body\"><code><body></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/br\"><code><br></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/button\"><code><button></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/canvas\"><code><canvas></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/caption\"><code><caption></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/center\"><code><center></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Element/cite\"><code><cite></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/code\"><code><code></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/col\"><code><col></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/colgroup\"><code><colgroup></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/data\"><code><data></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/datalist\"><code><datalist></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/dd\"><code><dd></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/del\"><code><del></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/details\"><code><details></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/dfn\"><code><dfn></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/dialog\"><code><dialog></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/dir\"><code><dir></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Element/div\"><code><div></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/dl\"><code><dl></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/dt\"><code><dt></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/em\"><code><em></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/embed\"><code><embed></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/fencedframe\"><code><fencedframe></code></a><abbr class=\"icon icon-experimental\" title=\"Experimental. Expect behavior to change in the future.\">\n <span class=\"visually-hidden\">Experimental</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Element/fieldset\"><code><fieldset></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/figcaption\"><code><figcaption></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/figure\"><code><figure></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/font\"><code><font></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Element/footer\"><code><footer></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/form\"><code><form></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/frame\"><code><frame></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Element/frameset\"><code><frameset></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Element/Heading_Elements\"><code><h1></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/head\"><code><head></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/header\"><code><header></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/hgroup\"><code><hgroup></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/hr\"><code><hr></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/html\"><code><html></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/i\"><code><i></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/iframe\"><code><iframe></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/img\"><code><img></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input\"><code><input></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/ins\"><code><ins></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/kbd\"><code><kbd></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/label\"><code><label></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/legend\"><code><legend></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/li\"><code><li></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/link\"><code><link></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/main\"><code><main></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/map\"><code><map></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/mark\"><code><mark></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/marquee\"><code><marquee></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Element/menu\"><code><menu></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/meta\"><code><meta></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/meter\"><code><meter></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/nav\"><code><nav></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/nobr\"><code><nobr></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Element/noembed\"><code><noembed></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Element/noframes\"><code><noframes></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Element/noscript\"><code><noscript></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/object\"><code><object></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/ol\"><code><ol></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/optgroup\"><code><optgroup></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/option\"><code><option></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/output\"><code><output></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/p\"><code><p></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/param\"><code><param></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Element/picture\"><code><picture></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/plaintext\"><code><plaintext></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Element/portal\"><code><portal></code></a><abbr class=\"icon icon-experimental\" title=\"Experimental. Expect behavior to change in the future.\">\n <span class=\"visually-hidden\">Experimental</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Element/pre\"><code><pre></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/progress\"><code><progress></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/q\"><code><q></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/rb\"><code><rb></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Element/rp\"><code><rp></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/rt\"><code><rt></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/rtc\"><code><rtc></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Element/ruby\"><code><ruby></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/s\"><code><s></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/samp\"><code><samp></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/script\"><code><script></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/search\"><code><search></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/section\"><code><section></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/select\"><code><select></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/slot\"><code><slot></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/small\"><code><small></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/source\"><code><source></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/span\"><code><span></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/strike\"><code><strike></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Element/strong\"><code><strong></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/style\"><code><style></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/sub\"><code><sub></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/summary\"><code><summary></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/sup\"><code><sup></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/table\"><code><table></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/tbody\"><code><tbody></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/td\"><code><td></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/template\"><code><template></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/textarea\"><code><textarea></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/tfoot\"><code><tfoot></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/th\"><code><th></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/thead\"><code><thead></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/time\"><code><time></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/title\"><code><title></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/tr\"><code><tr></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/track\"><code><track></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/tt\"><code><tt></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Element/u\"><code><u></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/ul\"><code><ul></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/var\"><code><var></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/video\"><code><video></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/wbr\"><code><wbr></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/xmp\"><code><xmp></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li></ol>\n </details>\n </li>\n <li class=\"toggle\">\n <details>\n <summary>Global attributes</summary>\n <ol><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/accesskey\"><code>accesskey</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/anchor\"><code>anchor</code></a><abbr class=\"icon icon-experimental\" title=\"Experimental. Expect behavior to change in the future.\">\n <span class=\"visually-hidden\">Experimental</span>\n</abbr><abbr class=\"icon icon-nonstandard\" title=\"Non-standard. Check cross-browser support before using.\">\n <span class=\"visually-hidden\">Non-standard</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/autocapitalize\"><code>autocapitalize</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/autocorrect\"><code>autocorrect</code></a><abbr class=\"icon icon-experimental\" title=\"Experimental. Expect behavior to change in the future.\">\n <span class=\"visually-hidden\">Experimental</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/autofocus\"><code>autofocus</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/class\"><code>class</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/contenteditable\"><code>contenteditable</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/data-*\"><code>data-*</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/dir\"><code>dir</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/draggable\"><code>draggable</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/enterkeyhint\"><code>enterkeyhint</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/exportparts\"><code>exportparts</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/hidden\"><code>hidden</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/id\"><code>id</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/inert\"><code>inert</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/inputmode\"><code>inputmode</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/is\"><code>is</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/itemid\"><code>itemid</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/itemprop\"><code>itemprop</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/itemref\"><code>itemref</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/itemscope\"><code>itemscope</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/itemtype\"><code>itemtype</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/lang\"><code>lang</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/nonce\"><code>nonce</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/part\"><code>part</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/popover\"><code>popover</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/slot\"><code>slot</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/spellcheck\"><code>spellcheck</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/style\"><code>style</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/tabindex\"><code>tabindex</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/title\"><code>title</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/translate\"><code>translate</code></a></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/virtualkeyboardpolicy\"><code>virtualkeyboardpolicy</code></a><abbr class=\"icon icon-experimental\" title=\"Experimental. Expect behavior to change in the future.\">\n <span class=\"visually-hidden\">Experimental</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/HTML/Global_attributes/writingsuggestions\"><code>writingsuggestions</code></a></li></ol>\n </details>\n </li>\n <li class=\"toggle\">\n <details>\n <summary>Attributes</summary>\n <ol>\n \n <li><a href=\"/en-US/docs/Web/HTML/Attributes/accept\">accept</a></li>\n \n <li><a href=\"/en-US/docs/Web/HTML/Attributes/autocomplete\">autocomplete</a></li>\n \n <li><a href=\"/en-US/docs/Web/HTML/Attributes/capture\">capture</a></li>\n \n <li><a href=\"/en-US/docs/Web/HTML/Attributes/crossorigin\">crossorigin</a></li>\n \n <li><a href=\"/en-US/docs/Web/HTML/Attributes/dirname\">dirname</a></li>\n \n <li><a href=\"/en-US/docs/Web/HTML/Attributes/disabled\">disabled</a></li>\n \n <li><a href=\"/en-US/docs/Web/HTML/Attributes/elementtiming\">elementtiming</a></li>\n \n <li><a href=\"/en-US/docs/Web/HTML/Attributes/for\">for</a></li>\n \n <li><a href=\"/en-US/docs/Web/HTML/Attributes/max\">max</a></li>\n \n <li><a href=\"/en-US/docs/Web/HTML/Attributes/maxlength\">maxlength</a></li>\n \n <li><a href=\"/en-US/docs/Web/HTML/Attributes/min\">min</a></li>\n \n <li><a href=\"/en-US/docs/Web/HTML/Attributes/minlength\">minlength</a></li>\n \n <li><a href=\"/en-US/docs/Web/HTML/Attributes/multiple\">multiple</a></li>\n \n <li><a href=\"/en-US/docs/Web/HTML/Attributes/pattern\">pattern</a></li>\n \n <li><a href=\"/en-US/docs/Web/HTML/Attributes/placeholder\">placeholder</a></li>\n \n <li><a href=\"/en-US/docs/Web/HTML/Attributes/readonly\">readonly</a></li>\n \n <li><a href=\"/en-US/docs/Web/HTML/Attributes/rel\">rel</a></li>\n \n <li><a href=\"/en-US/docs/Web/HTML/Attributes/required\">required</a></li>\n \n <li><a href=\"/en-US/docs/Web/HTML/Attributes/size\">size</a></li>\n \n <li><a href=\"/en-US/docs/Web/HTML/Attributes/step\">step</a></li>\n \n </ol>\n </details>\n </li>\n <li class=\"toggle\">\n <details>\n <summary><code><input></code> types</summary>\n <ol><li><a href=\"/en-US/docs/Web/HTML/Element/input/button\"><code><input type=\"button\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/checkbox\"><code><input type=\"checkbox\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/color\"><code><input type=\"color\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/date\"><code><input type=\"date\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/datetime-local\"><code><input type=\"datetime-local\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/email\"><code><input type=\"email\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/file\"><code><input type=\"file\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/hidden\"><code><input type=\"hidden\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/image\"><code><input type=\"image\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/month\"><code><input type=\"month\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/number\"><code><input type=\"number\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/password\"><code><input type=\"password\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/radio\"><code><input type=\"radio\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/range\"><code><input type=\"range\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/reset\"><code><input type=\"reset\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/search\"><code><input type=\"search\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/submit\"><code><input type=\"submit\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/tel\"><code><input type=\"tel\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/text\"><code><input type=\"text\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/time\"><code><input type=\"time\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/url\"><code><input type=\"url\"></code></a></li><li><a href=\"/en-US/docs/Web/HTML/Element/input/week\"><code><input type=\"week\"></code></a></li></ol>\n </details>\n </li>\n <li class=\"section no-link\">Guides</li>\n <li>\n <ol>\n <li><a href=\"/en-US/docs/Web/HTML/Content_categories\">Content categories</a></li>\n <li><a href=\"/en-US/docs/Glossary/Block-level_content\">Block-level elements</a></li>\n <li><a href=\"/en-US/docs/Glossary/Inline-level_content\">Inline elements</a></li>\n <li><a href=\"/en-US/docs/Web/HTML/Quirks_Mode_and_Standards_Mode\">Quirks Mode and Standards Mode</a></li>\n <li><a href=\"/en-US/docs/Web/HTML/Date_and_time_formats\">Date and time formats used in HTML</a></li>\n <li><a href=\"/en-US/docs/Web/HTML/Constraint_validation\">Constraint validation</a></li>\n <li><a href=\"/en-US/docs/Web/HTML/Microdata\">Microdata</a></li>\n <li><a href=\"/en-US/docs/Web/HTML/microformats\">Microformats</a></li>\n <li><a href=\"/en-US/docs/Web/HTML/Viewport_meta_tag\">Viewport meta tag</a></li>\n <li><a href=\"/en-US/docs/Web/HTML/CORS_enabled_image\">Allowing cross-origin use of images and canvas</a></li>\n </ol>\n </li>\n </ol>\n","sidebarMacro":"HTMLSidebar","body":[{"type":"prose","value":{"id":null,"title":null,"isH3":false,"content":"<p>The <strong><code><bdi></code></strong> <a href=\"/en-US/docs/Web/HTML\">HTML</a> element tells the browser's bidirectional algorithm to treat the text it contains in isolation from its surrounding text. It's particularly useful when a website dynamically inserts some text and doesn't know the directionality of the text being inserted.</p>"}},{"type":"prose","value":{"id":"try_it","title":"Try it","isH3":false,"content":"<iframe class=\"interactive is-tabbed-standard-height\" height=\"200\" src=\"https://interactive-examples.mdn.mozilla.net/pages/tabbed/bdi.html\" title=\"MDN Web Docs Interactive Example\" allow=\"clipboard-write\" loading=\"lazy\"></iframe>\n<p>Bidirectional text is text that may contain both sequences of characters that are arranged left-to-right (LTR) and sequences of characters that are arranged right-to-left (RTL), such as an Arabic quotation embedded in an English string. Browsers implement the <a href=\"https://www.w3.org/International/articles/inline-bidi-markup/uba-basics\" class=\"external\" target=\"_blank\">Unicode Bidirectional Algorithm</a> to handle this. In this algorithm, characters are given an implicit directionality: for example, Latin characters are treated as LTR while Arabic characters are treated as RTL. Some other characters (such as spaces and some punctuation) are treated as neutral and are assigned directionality based on that of their surrounding characters.</p>\n<p>Usually, the bidirectional algorithm will do the right thing without the author having to provide any special markup but, occasionally, the algorithm needs help. That's where <code><bdi></code> comes in.</p>\n<p>The <code><bdi></code> element is used to wrap a span of text and instructs the bidirectional algorithm to treat this text in isolation from its surroundings. This works in two ways:</p>\n<ul>\n <li>The directionality of text embedded in <code><bdi></code> <em>does not influence</em> the directionality of the surrounding text.</li>\n <li>The directionality of text embedded in <code><bdi></code> <em>is not influenced by</em> the directionality of the surrounding text.</li>\n</ul>\n<p>For example, consider some text like:</p>\n<pre class=\"brush: plain notranslate\">EMBEDDED-TEXT - 1st place\n</pre>\n<p>If <code>EMBEDDED-TEXT</code> is LTR, this works fine. But if <code>EMBEDDED-TEXT</code> is RTL, then <code>- 1</code> will be treated as RTL text (because it consists of neutral and weak characters). The result will be garbled:</p>\n<pre class=\"brush: plain notranslate\">1 - EMBEDDED-TEXTst place\n</pre>\n<p>If you know the directionality of <code>EMBEDDED-TEXT</code> in advance, you can fix this problem by wrapping <code>EMBEDDED-TEXT</code> in a <a href=\"/en-US/docs/Web/HTML/Element/span\"><code><span></code></a> with the <a href=\"/en-US/docs/Web/HTML/Global_attributes/dir\"><code>dir</code></a> attribute set to the known directionality. But if you don't know the directionality - for example, because <code>EMBEDDED-TEXT</code> is being read from a database or entered by the user - you should use <code><bdi></code> to prevent the directionality of <code>EMBEDDED-TEXT</code> from affecting its surroundings.</p>\n<p>Though the same visual effect can be achieved using the CSS rule <a href=\"/en-US/docs/Web/CSS/unicode-bidi\"><code>unicode-bidi: isolate</code></a> on a <a href=\"/en-US/docs/Web/HTML/Element/span\"><code><span></code></a> or another text-formatting element, HTML authors should not use this approach because it is not semantic and browsers are allowed to ignore CSS styling.</p>\n<p>Embedding the characters in <code><span dir=\"auto\"></code> has the same effect as using <code><bdi></code>, but its semantics are less clear.</p>"}},{"type":"prose","value":{"id":"attributes","title":"Attributes","isH3":false,"content":"<p>Like all other HTML elements, this element supports the <a href=\"/en-US/docs/Web/HTML/Global_attributes\">global attributes</a>, except that the <a href=\"/en-US/docs/Web/HTML/Global_attributes/dir\"><code>dir</code></a> attribute behaves differently than normal: it defaults to <code>auto</code>, meaning its value is never inherited from the parent element. This means that unless you specify a value of either <code>rtl</code> or <code>ltr</code> for <code>dir</code>, the <a href=\"/en-US/docs/Glossary/User_agent\">user agent</a> will determine the correct directionality to use based on the contents of the <code><bdi></code>.</p>"}},{"type":"prose","value":{"id":"examples","title":"Examples","isH3":false,"content":""}},{"type":"prose","value":{"id":"no_bdi_with_only_ltr","title":"No bdi with only LTR","isH3":true,"content":"<p>This example lists the winners of a competition using <a href=\"/en-US/docs/Web/HTML/Element/span\"><code><span></code></a> elements only. When the names only contain LTR text the results look fine:</p>\n<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">html</span></div><pre class=\"brush: html notranslate\"><code><ul>\n <li><span class=\"name\">Henrietta Boffin</span> - 1st place</li>\n <li><span class=\"name\">Jerry Cruncher</span> - 2nd place</li>\n</ul>\n</code></pre></div>\n<div class=\"code-example\"><pre class=\"brush: css hidden notranslate\"><code>body {\n border: 1px solid #3f87a6;\n max-width: calc(100% - 40px - 6px);\n padding: 20px;\n width: calc(100% - 40px - 6px);\n border-width: 1px 1px 1px 5px;\n}\n</code></pre></div><div class=\"code-example\"><div class=\"example-header\"></div><iframe class=\"sample-code-frame\" title=\"No bdi with only LTR sample\" id=\"frame_no_bdi_with_only_ltr\" height=\"120\" src=\"about:blank\" data-live-path=\"/en-US/docs/Web/HTML/Element/bdi\" data-live-id=\"no_bdi_with_only_ltr\" sandbox=\"allow-same-origin allow-scripts\" loading=\"lazy\"></iframe></div>"}},{"type":"prose","value":{"id":"no_bdi_with_rtl_text","title":"No bdi with RTL text","isH3":true,"content":"<p>This example lists the winners of a competition using <a href=\"/en-US/docs/Web/HTML/Element/span\"><code><span></code></a> elements only, and one of the winners has a name consisting of RTL text. In this case the <code>- 1</code>, which consists of characters with neutral or weak directionality, will adopt the directionality of the RTL text, and the result will be garbled:</p>\n<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">html</span></div><pre class=\"brush: html notranslate\"><code><ul>\n <li><span class=\"name\">اَلأَعْشَى</span> - 1st place</li>\n <li><span class=\"name\">Jerry Cruncher</span> - 2nd place</li>\n</ul>\n</code></pre></div>\n<div class=\"code-example\"><pre class=\"brush: css hidden notranslate\"><code>body {\n border: 1px solid #3f87a6;\n max-width: calc(100% - 40px - 6px);\n padding: 20px;\n width: calc(100% - 40px - 6px);\n border-width: 1px 1px 1px 5px;\n}\n</code></pre></div><div class=\"code-example\"><div class=\"example-header\"></div><iframe class=\"sample-code-frame\" title=\"No bdi with RTL text sample\" id=\"frame_no_bdi_with_rtl_text\" height=\"120\" src=\"about:blank\" data-live-path=\"/en-US/docs/Web/HTML/Element/bdi\" data-live-id=\"no_bdi_with_rtl_text\" sandbox=\"allow-same-origin allow-scripts\" loading=\"lazy\"></iframe></div>"}},{"type":"prose","value":{"id":"using_bdi_with_ltr_and_rtl_text","title":"Using bdi with LTR and RTL text","isH3":true,"content":"<p>This example lists the winners of a competition using <code><bdi></code> elements. These elements instruct the browser to treat the name in isolation from its embedding context, so the example output is properly ordered:</p>\n<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">html</span></div><pre class=\"brush: html notranslate\"><code><ul>\n <li><bdi class=\"name\">اَلأَعْشَى</bdi> - 1st place</li>\n <li><bdi class=\"name\">Jerry Cruncher</bdi> - 2nd place</li>\n</ul>\n</code></pre></div>\n<div class=\"code-example\"><pre class=\"brush: css hidden notranslate\"><code>body {\n border: 1px solid #3f87a6;\n max-width: calc(100% - 40px - 6px);\n padding: 20px;\n width: calc(100% - 40px - 6px);\n border-width: 1px 1px 1px 5px;\n}\n</code></pre></div><div class=\"code-example\"><div class=\"example-header\"></div><iframe class=\"sample-code-frame\" title=\"Using bdi with LTR and RTL text sample\" id=\"frame_using_bdi_with_ltr_and_rtl_text\" height=\"120\" src=\"about:blank\" data-live-path=\"/en-US/docs/Web/HTML/Element/bdi\" data-live-id=\"using_bdi_with_ltr_and_rtl_text\" sandbox=\"allow-same-origin allow-scripts\" loading=\"lazy\"></iframe></div>"}},{"type":"prose","value":{"id":"technical_summary","title":"Technical summary","isH3":false,"content":"<figure class=\"table-container\"><table class=\"properties\">\n <tbody>\n <tr>\n <th scope=\"row\"><a href=\"/en-US/docs/Web/HTML/Content_categories\">Content categories</a></th>\n <td>\n <a href=\"/en-US/docs/Web/HTML/Content_categories#flow_content\">Flow content</a>,\n <a href=\"/en-US/docs/Web/HTML/Content_categories#phrasing_content\">phrasing content</a>, palpable content.\n </td>\n </tr>\n <tr>\n <th scope=\"row\">Permitted content</th>\n <td><a href=\"/en-US/docs/Web/HTML/Content_categories#phrasing_content\">Phrasing content</a>.</td>\n </tr>\n <tr>\n <th scope=\"row\">Tag omission</th>\n <td>None, both the starting and ending tag are mandatory.</td>\n </tr>\n <tr>\n <th scope=\"row\">Permitted parents</th>\n <td>\n Any element that accepts\n <a href=\"/en-US/docs/Web/HTML/Content_categories#phrasing_content\">phrasing content</a>.\n </td>\n </tr>\n <tr>\n <th scope=\"row\">Implicit ARIA role</th>\n <td><code><a href=\"/en-US/docs/Web/Accessibility/ARIA/Roles/generic_role\">generic</a></code></td>\n </tr>\n <tr>\n <th scope=\"row\">Permitted ARIA roles</th>\n <td>Any</td>\n </tr>\n <tr>\n <th scope=\"row\">DOM interface</th>\n <td><a href=\"/en-US/docs/Web/API/HTMLElement\"><code>HTMLElement</code></a></td>\n </tr>\n </tbody>\n</table></figure>"}},{"type":"specifications","value":{"title":"Specifications","id":"specifications","isH3":false,"specifications":[{"bcdSpecificationURL":"https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-bdi-element","title":"HTML Standard"}],"query":"html.elements.bdi"}},{"type":"browser_compatibility","value":{"title":"Browser compatibility","id":"browser_compatibility","isH3":false,"query":"html.elements.bdi"}},{"type":"prose","value":{"id":"see_also","title":"See also","isH3":false,"content":"<ul>\n <li><a href=\"https://www.w3.org/International/articles/inline-bidi-markup/\" class=\"external\" target=\"_blank\">Inline markup and bidirectional text in HTML</a></li>\n <li><a href=\"https://www.w3.org/International/articles/inline-bidi-markup/uba-basics\" class=\"external\" target=\"_blank\">Unicode Bidirectional Algorithm basics</a></li>\n <li><a href=\"/en-US/docs/Glossary/Localization\">Localization</a></li>\n <li>Related HTML element: <a href=\"/en-US/docs/Web/HTML/Element/bdo\"><code><bdo></code></a></li>\n <li>Related CSS properties: <a href=\"/en-US/docs/Web/CSS/direction\"><code>direction</code></a>, <a href=\"/en-US/docs/Web/CSS/unicode-bidi\"><code>unicode-bidi</code></a></li>\n</ul>"}}],"toc":[{"text":"Try it","id":"try_it"},{"text":"Attributes","id":"attributes"},{"text":"Examples","id":"examples"},{"text":"Technical summary","id":"technical_summary"},{"text":"Specifications","id":"specifications"},{"text":"Browser compatibility","id":"browser_compatibility"},{"text":"See also","id":"see_also"}],"summary":"The <bdi> HTML element tells the browser's bidirectional algorithm to treat the text it contains in isolation from its surrounding text. It's particularly useful when a website dynamically inserts some text and doesn't know the directionality of the text being inserted.","popularity":0,"modified":"2024-10-11T12:51:34.000Z","other_translations":[{"locale":"de","title":"<bdi>: Das Bidirektionale Isolierungselement","native":"Deutsch"},{"locale":"es","title":"<bdi>","native":"Español"},{"locale":"fr","title":"<bdi> : l'élément d'isolation bidirectionnelle","native":"Français"},{"locale":"ja","title":"<bdi>: 書字方向分離要素","native":"日本語"},{"locale":"pt-BR","title":"<bdi>","native":"Português (do Brasil)"},{"locale":"ru","title":"<bdi>","native":"Русский"},{"locale":"zh-CN","title":"<bdi>","native":"中文 (简体)"},{"locale":"zh-TW","title":"<bdi>：雙向獨立文本元素","native":"正體中文 (繁體)"}],"pageType":"html-element","source":{"folder":"en-us/web/html/element/bdi","github_url":"https://github.com/mdn/content/blob/main/files/en-us/web/html/element/bdi/index.md","last_commit_url":"https://github.com/mdn/content/commit/816cc4d4a5a318a23222946b6981bb92b499aebb","filename":"index.md"},"short_title":"<bdi>","parents":[{"uri":"/en-US/docs/Web","title":"References"},{"uri":"/en-US/docs/Web/HTML","title":"HTML"},{"uri":"/en-US/docs/Web/HTML/Element","title":"Elements"},{"uri":"/en-US/docs/Web/HTML/Element/bdi","title":"<bdi>"}],"pageTitle":"<bdi>: The Bidirectional Isolate element - HTML: HyperText Markup Language | MDN","noIndexing":false}}</script></body></html>