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Dokumentation: <amp-list> - amp.dev
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href="/id/documentation/components/amp-list/" role="listitem">Indonesia</a> <a class="-tw" href="/ja/documentation/components/amp-list/" role="listitem">日本語</a> <a class="-tw" href="/ko/documentation/components/amp-list/" role="listitem">한국어</a> <a class="-tw" href="/pt_br/documentation/components/amp-list/" role="listitem">Português</a> <a class="-tw" href="/ru/documentation/components/amp-list/" role="listitem">Русский</a> <a class="-tw" href="/tr/documentation/components/amp-list/" role="listitem">Türkçe</a> <a class="-tw" href="/zh_cn/documentation/components/amp-list/" role="listitem">中文</a> <a class="-tw" href="/pl/documentation/components/amp-list/" role="listitem">Polski</a> <a class="-tw" href="/vi/documentation/components/amp-list/" role="listitem">Tiếng việt</a> </div> </div> </div> </header> <label class="ap-o-burger-menu-label" on="tap:AMP.setState({mainmenuopen: !mainmenuopen, noScrollState: !noScrollState})" [class]="'ap-o-burger-menu-label ' + (mainmenuopen ? 'mainmenuopen ' : '')" for="burger-menu" tabindex="0" role="button" aria-label="Hamburger Menü" i-amphtml-binding> <div class="ap-a-ico ap-o-burger-menu-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#menu"/></svg> </div> </label> <nav class="ap-o-burger-menu" [class]="mainmenuopen ? 'ap-o-burger-menu mainmenuopen' : 'ap-o-burger-menu'" i-amphtml-binding> <ul class="-th"> <li class="-tp"> <label class="ap-o-burger-menu-link -tw "> Über </label> <input class="-td" type="checkbox" aria-label="About"> <span class="nav-icon"> <svg class="ap-a-ico"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </span> <ul class="-th"> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/about/websites/"> AMP Websites </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/about/stories/"> Web Stories </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/about/ads/"> AMP Ads </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/about/email/"> AMP E-Mail </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/about/how-amp-works/"> So funktioniert AMP </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/about/mission-and-vision/"> Vision & Mission </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/about/use-cases/"> Use Cases </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/success-stories/"> Erfolgsstorys </a> </li> </ul> </li> <li class="-tp"> <label class="ap-o-burger-menu-link -tw "> Dokumentation </label> <input class="-td" type="checkbox" aria-label="Documentation"> <span class="nav-icon"> <svg class="ap-a-ico"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </span> <ul class="-th"> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/documentation/"> Erste Schritte </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/documentation/guides-and-tutorials/"> Anleitungen & Tutorials </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/documentation/components/"> Komponenten </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/documentation/examples/"> Beispiele </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/documentation/courses/"> Kurse </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/documentation/templates/"> Templates </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/documentation/tools/"> Tools </a> </li> </ul> </li> <li class="-tp"> <label class="ap-o-burger-menu-link -tw "> Community </label> <input class="-td" type="checkbox" aria-label="Community"> <span class="nav-icon"> <svg class="ap-a-ico"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </span> <ul class="-th"> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/documentation/guides-and-tutorials/contribute/"> Mitmachen </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/community/roadmap/"> Roadmap </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/community/governance/"> Leitung </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/community/working-groups/access-subscriptions/"> Arbeitsgruppen </a> </li> </ul> </li> <li class="-tp"> <label class="ap-o-burger-menu-link -tw "> Veranstaltungen </label> <input class="-td" type="checkbox" aria-label="Events"> <span class="nav-icon"> <svg class="ap-a-ico"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </span> <ul class="-th"> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/events/amp-fest-2020/"> AMP Fest 2020 </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/de/events/amp-roadshow/"> AMP Roadshow </a> </li> </ul> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tw" href="https://blog.amp.dev">Blog</a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tw " href="/de/support/"> Hilfe </a> </li> </ul> </nav> <div class="-ui"> <amp-position-observer on="enter:slideTransition.start; exit:slideTransition.start,slideTransition.reverse" intersection-ratios="1" layout="nodisplay" class="i-amphtml-layout-nodisplay" hidden="hidden" i-amphtml-layout="nodisplay"> </amp-position-observer> <amp-animation id="slideTransition" layout="nodisplay" class="i-amphtml-layout-nodisplay" hidden="hidden" i-amphtml-layout="nodisplay"> <script type="application/json">{"duration":"150ms","fill":"both","easing":"ease-out","iterations":"1","animations":[{"selector":".label-title","keyframes":[{"transform":"scale3d(0, 1, 1)"},{"transform":"scale3d(1, 1, 1)"}]}]}</script> </amp-animation> </div> <amp-user-notification class="-ll i-amphtml-layout-nodisplay" id="format-filter-hint" layout="nodisplay" hidden="hidden" i-amphtml-layout="nodisplay"> </amp-user-notification> <div class="-lf" aria-hidden="true"> <div class="-lc"> <div class="-lh">Wähle dein Format für eine optimierte Erfahrung</div> <button class="-lp" on="tap:format-filter-hint.dismiss"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#close"/></svg> </button> </div> </div> <main class="ap--main -ld"> <div class="-tf"> <input class="-uu ap-a-sidebar-mobile-toggle-input-sidebar" type="checkbox" name="sidebar" id="sidebar" autocomplete="off"> <input class="-uf ap-a-sidebar-desktop-toggle-input-sidebar" type="checkbox" name="sidebar-desktop" id="sidebar-desktop" autocomplete="off"> <span id="ap--sidebar-content" class="-uc"></span> <section class="ap--toc"> <div class="ap-o-toc" [class]="contentmenuopen ? 'ap-o-toc contentmenuopen' : 'ap-o-toc'" i-amphtml-binding> <label class="ap-o-toc-toggle" for="toc" on="tap:AMP.setState({contentmenuopen: !contentmenuopen})" role="contentmenutrigger" tabindex="0"> <span class="ap-o-toc-hl">Inhaltsverzeichnis</span> <span class="nav-icon"> <svg class="ap-a-ico"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </span> </label> <input class="-us -un" type="checkbox" name="toc" id="toc" autocomplete="off"> <ul><li><a href="#usage">Usage</a><ul> <li><a href="#displaying-a-dynamic-list">Displaying a dynamic list</a></li> <li><a href="#accessibility-considerations-for-amp-list">Accessibility considerations for amp-list</a></li> <li><a href="#xhr-batching">XHR batching</a></li> <li><a href="#specifying-an-overflow">Specifying an overflow</a></li> <li><a href="#placeholder-and-fallback">Placeholder and fallback</a></li> <li><a href="#refreshing-data">Refreshing data</a></li> <li><a href="#dynamic-resizing">Dynamic resizing</a></li> <li><a href="#initialization-from-amp-state">Initialization from amp-state</a></li> <li><a href="#using-amp-script-as-a-data-source">Using amp-script as a data source</a></li> <li><a href="#load-more-and-infinite-scroll">Load more and infinite scroll</a></li> <li><a href="#customizing-load-more-elements">Customizing load-more elements</a><ul> <li><a href="#load-more-button">load-more-button</a></li> </ul> </li> <li><a href="#accessibility-considerations-for-infinite-scroll-lists">Accessibility considerations for infinite scroll lists</a><ul> <li><a href="#example:">Example:</a></li> <li><a href="#example:_1">Example:</a></li> <li><a href="#load-more-loading">load-more-loading</a></li> <li><a href="#load-more-failed">load-more-failed</a></li> <li><a href="#load-more-end">load-more-end</a></li> </ul> </li> <li><a href="#substitutions">Substitutions</a></li> </ul> </li> <li><a href="#attributes">Attributes</a><ul> <li><a href="#src-(required)">src (required)</a></li> <li><a href="#credentials">credentials</a></li> <li><a href="#items">items</a></li> <li><a href="#max-items">max-items</a></li> <li><a href="#single-item">single-item</a></li> <li><a href="#xssi-prefix">xssi-prefix</a></li> <li><a href="#reset-on-refresh">reset-on-refresh</a></li> <li><a href="#binding">binding</a></li> <li><a href="#[is-layout-container]">[is-layout-container]</a><ul> <li><a href="#load-more">load-more</a></li> <li><a href="#load-more-bookmark">load-more-bookmark</a></li> </ul> </li> <li><a href="#common-attributes">Common attributes</a><ul> <li></li> </ul> </li> </ul> </li> <li><a href="#validation">Validation</a></li></ul> </div> </section> <section class="-t"> <label class="-uo -ur ap-a-sidebar-mobile-toggle-label-sidebar" for="sidebar" on="tap:sidebar-left.toggle" role="categoriemenutrigger" tabindex="0"> <span class="label-icon"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#sidebar-toggle"/></svg></span> <span class="label-title">Seitenleiste umschalten</span> </label> <label class="-uo -ul ap-a-sidebar-desktop-toggle-label-sidebar" for="sidebar-desktop" role="categoriemenutrigger-desktop" tabindex="0"> <span class="label-icon"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#sidebar-toggle"/></svg></span> <span class="label-title">Seitenleiste umschalten</span> </label> <nav class="-ue"> <a class="ap-m-breadcrumbs-crumb" href="/de/documentation/">Dokumentation</a> <span class="ap-m-breadcrumbs-divider"> <svg class="ap-a-ico -ut"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </span> <a class="ap-m-breadcrumbs-crumb" href="/de/documentation/components/">Komponenten</a> </nav> <h1> amp-list <div class="ap--versions"> <select class="ap--versions-toggle" on="change:AMP.navigateTo(url=event.value)"> <option value="../amp-list-v1.0/?format=websites"> 1.0 </option> <option selected value="../amp-list/?format=websites"> 0.1 </option> </select> </div> </h1> <div class="ap-o-component-intro"> <div class="ap-o-component-intro-row"> <h4 class="ap-o-component-intro-headline">Description</h4> <p class="ap-o-component-intro-text">Dynamically downloads data and creates list items using a template.</p> </div> <div class="ap-o-component-intro-row ap-o-component-intro-row-inline"> <h4 class="ap-o-component-intro-headline">Required Scripts</h4> <div id="amp-script" class="ap-a-copy-script"> <pre><script async custom-element="amp-list" src="https://cdn.ampproject.org/v0/amp-list-0.1.js"></script></pre> <amp-iframe width="24" height="24" layout="fixed" sandbox="allow-scripts" src="https://amp.dev/shared/copy-script/#%3Cscript%20async%20custom-element%3D%22amp-list%22%20src%3D%22https%3A//cdn.ampproject.org/v0/amp-list-0.1.js%22%3E%3C/script%3E" class="i-amphtml-layout-fixed i-amphtml-layout-size-defined" style="width:24px;height:24px;" i-amphtml-layout="fixed"> <div placeholder></div> </amp-iframe> </div> </div> <div class="ap-o-component-intro-row ap-o-component-intro-row-inline"> <h4 class="ap-o-component-intro-headline">Supported Layouts</h4> <div> <a class='ap-a-pill ap-a-pill-flat ap-a-pill-small ap-a-pill-link' href='/documentation/guides-and-tutorials/learn/amp-html-layout/layouts_demonstrated#fill'>fill</a> <a class='ap-a-pill ap-a-pill-flat ap-a-pill-small ap-a-pill-link' href='/documentation/guides-and-tutorials/learn/amp-html-layout/layouts_demonstrated#fixed'>fixed</a> <a class='ap-a-pill ap-a-pill-flat ap-a-pill-small ap-a-pill-link' href='/documentation/guides-and-tutorials/learn/amp-html-layout/layouts_demonstrated#fixed-height'>fixed-height</a> <a class='ap-a-pill ap-a-pill-flat ap-a-pill-small ap-a-pill-link' href='/documentation/guides-and-tutorials/learn/amp-html-layout/layouts_demonstrated#flex-item'>flex-item</a> <a class='ap-a-pill ap-a-pill-flat ap-a-pill-small ap-a-pill-link' href='/documentation/guides-and-tutorials/learn/amp-html-layout/layouts_demonstrated#nodisplay'>nodisplay</a> <a class='ap-a-pill ap-a-pill-flat ap-a-pill-small ap-a-pill-link' href='/documentation/guides-and-tutorials/learn/amp-html-layout/layouts_demonstrated#responsive'>responsive</a> </div> </div> <div class="ap-o-component-intro-row"> <div id="examples" class="ap-m-clip"> <h4 class="ap-o-component-intro-headline">Beispiele</h4> <div class="ap-o-component-intro-list"> <a class='ap-o-component-intro-list-item' href='/documentation/examples/e-commerce/amp_for_e-commerce_getting_started/'>AMP for E-Commerce Getting Started</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/e-commerce/product_browse_page/'>Product Browse Page</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/e-commerce/product_page/'>Product Page</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/components/amp-bind/'>amp-bind</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/components/amp-list/'>amp-list</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/components/amp-mustache/'>amp-mustache</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/interactivity-dynamic-content/client-side_filtering/'>Client-side filtering</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/interactivity-dynamic-content/dynamic_accordion/'>Dynamic Accordion</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/interactivity-dynamic-content/linked_dropdowns/'>Linked Dropdowns</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/interactivity-dynamic-content/mixing_dynamic_and_cached_data/'>Mixing Dynamic and Cached Data</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/interactivity-dynamic-content/restrict_duplicate_selection/'>Restrict Duplicate Selection</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/interactivity-dynamic-content/show_more_button/'>Show More Button</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/multimedia-animations/custom_loading_indicators/'>Custom Loading Indicators</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/news-publishing/news_article/'>News Article</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/news-publishing/recipe/'>Recipe</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/personalization/geolocation_with_amp-list/'>Geolocation with amp-list</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/user-consent/advanced_user_consent_flow/'>Advanced User Consent Flow</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/user-consent/client_side_user_consent_flow/'>Client Side User Consent Flow</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/e-commerce/checkout_flow/'>Checkout Flow</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/e-commerce/hotel/'>Hotel</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/e-commerce/housing/'>Housing</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/e-commerce/shopping_cart/'>Shopping Cart</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/interactivity-dynamic-content/comment_section/'>Comment Section</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/interactivity-dynamic-content/favorite_button/'>Favorite Button</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/interactivity-dynamic-content/paged_list/'>Paged List</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/interactivity-dynamic-content/seatmap/'>SeatMap</a> <a class='ap-o-component-intro-list-item' href='/documentation/examples/interactivity-dynamic-content/seatmap_multiple_selection/'>SeatMap Multiple Selection</a> </div> <button id="examples-expand" class="ap-m-clip-expand" on="tap:examples.toggleClass(class='expanded', force=true),examples-expand.hide()"> <svg class="ap-m-clip-expand-icon"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </button> </div> </div> </div> <h2 id="usage">Usage</h2> <p>The <code>amp-list</code> component fetches dynamic content from a CORS JSON endpoint. The response from the endpoint contains data, which is rendered in the specified template.</p> <p> </p><div class="ap-m-tip"> <div class="ap-a-ico ap-m-tip-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#warning-sign"/></svg> </div> <div class="ap-m-tip-content"> Your endpoint must implement the requirements specified in the <a href="https://amp.dev/documentation/guides-and-tutorials/learn/amp-caches-and-cors/amp-cors-requests">CORS Requests in AMP</a> spec. </div> </div><p></p> <p>You can specify a template in one of two ways:</p> <ul> <li>a <code>template</code> attribute that references an ID of an existing templating element.</li> <li>a templating element nested directly inside the <code>amp-list</code> element.</li> </ul> <p> </p><div class="ap-m-tip"> <div class="ap-a-ico ap-m-tip-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#speech-bubble"/></svg> </div> <div class="ap-m-tip-content"> When using <code><amp-list></code> in tandem with another templating AMP component, such as <code><amp-form></code>, note that templates may not nest in valid AMP documents. In this case a valid workaround is to provide the template by <code>id</code> via the <code>template</code> attribute. Learn more about <a href="https://github.com/ampproject/amphtml/blob/main/extensions/amp-list/../amp-mustache/amp-mustache.md">nested templates in <code><amp-mustache></code></a>. </div> </div><p></p> <p>For more details on templates, see <a href="https://github.com/ampproject/amphtml/blob/main/extensions/amp-list/../../docs/spec/amp-html-templates.md">AMP HTML Templates</a>.</p> <h3 id="displaying-a-dynamic-list">Displaying a dynamic list</h3> <p>In the following example, we retrieve JSON data that contains URLs and titles, and render the content in a nested <a href="https://github.com/ampproject/amphtml/blob/main/extensions/amp-list/../amp-mustache/amp-mustache.md">amp-mustache template</a>.</p><div class="ap-code-preview inline"> <div class="ap-code-preview-preview"> <amp-list width="auto" height="100" layout="fixed-height" src="/static/inline-examples/data/amp-list-urls.json" class="i-amphtml-layout-fixed-height i-amphtml-layout-size-defined" style="height:100px;" i-amphtml-layout="fixed-height"> <template type="amp-mustache"> <div class="url-entry"> <a href="{{url}}">{{title}}</a> </div> </template> </amp-list> </div> <div class="-ta"><pre><span></span><span class="p"><</span><span class="nt">amp-list</span> <span class="na">width</span><span class="o">=</span><span class="s">"auto"</span> <span class="na">height</span><span class="o">=</span><span class="s">"100"</span> <span class="na">layout</span><span class="o">=</span><span class="s">"fixed-height"</span> <span class="na">src</span><span class="o">=</span><span class="s">"/static/inline-examples/data/amp-list-urls.json"</span> <span class="p">></span> <span class="p"><</span><span class="nt">template</span> <span class="na">type</span><span class="o">=</span><span class="s">"amp-mustache"</span><span class="p">></span> <span class="p"><</span><span class="nt">div</span> <span class="na">class</span><span class="o">=</span><span class="s">"url-entry"</span><span class="p">></span> <span class="p"><</span><span class="nt">a</span> <span class="na">href</span><span class="o">=</span><span class="s">"{{url}}"</span><span class="p">></span>{{title}}<span class="p"></</span><span class="nt">a</span><span class="p">></span> <span class="p"></</span><span class="nt">div</span><span class="p">></span> <span class="p"></</span><span class="nt">template</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-list</span><span class="p">></span> </pre></div> </div> <a href="https://playground.amp.dev/?url=https%3A//preview.amp.dev/de/documentation/components/amp-list.example.1.html%3Fformat%3Dwebsites" class="-n ap--playground-link"> <div class="ap-a-ico -i"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg> </div> <span class="-r">Dieses Snippet im Playground öffnen</span> </a> <p>Here is the JSON file that we used:</p> <div class="-ta"><pre><span></span><span class="p">{</span> <span class="nt">"items"</span><span class="p">:</span> <span class="p">[</span> <span class="p">{</span> <span class="nt">"title"</span><span class="p">:</span> <span class="s2">"AMP YouTube Channel"</span><span class="p">,</span> <span class="nt">"url"</span><span class="p">:</span> <span class="s2">"https://www.youtube.com/channel/UCXPBsjgKKG2HqsKBhWA4uQw"</span> <span class="p">},</span> <span class="p">{</span> <span class="nt">"title"</span><span class="p">:</span> <span class="s2">"AMPproject.org"</span><span class="p">,</span> <span class="nt">"url"</span><span class="p">:</span> <span class="s2">"https://www.ampproject.org/"</span> <span class="p">},</span> <span class="p">{</span> <span class="nt">"title"</span><span class="p">:</span> <span class="s2">"AMP"</span><span class="p">,</span> <span class="nt">"url"</span><span class="p">:</span> <span class="s2">"https://amp.dev/"</span> <span class="p">},</span> <span class="p">{</span> <span class="nt">"title"</span><span class="p">:</span> <span class="s2">"AMP Start"</span><span class="p">,</span> <span class="nt">"url"</span><span class="p">:</span> <span class="s2">"https://ampstart.com/"</span> <span class="p">}</span> <span class="p">]</span> <span class="p">}</span> </pre></div> <p>Here is how we styled the content fetched:</p> <div class="-ta"><pre><span></span><span class="nt">amp-list</span> <span class="nt">div</span><span class="o">[</span><span class="nt">role</span><span class="o">=</span><span class="s1">'list'</span><span class="o">]</span> <span class="p">{</span> <span class="k">display</span><span class="p">:</span> <span class="k">grid</span><span class="p">;</span> <span class="k">grid-gap</span><span class="p">:</span> <span class="mf">0.5</span><span class="kt">em</span><span class="p">;</span> <span class="p">}</span> </pre></div> <p>The request is always made from the client, even if the document was served from the AMP Cache. Loading is triggered using normal AMP rules depending on how far the element is from the current viewport.</p> <p>If <code><amp-list></code> needs more space after loading, it requests the AMP runtime to update its height using the normal AMP flow. If the AMP runtime cannot satisfy the request for the new height, it will display the <code>overflow</code> element when available. Notice however, that the typical placement of <code><amp-list></code> elements at the bottom of the document almost always guarantees that the AMP runtime can resize them.</p> <h3 id="accessibility-considerations-for-amp-list">Accessibility considerations for <code>amp-list</code></h3> <p>By default, <code><amp-list></code> adds a <code>list</code> ARIA role to the list element and a <code>listitem</code> role to item elements rendered via the template. If the list element or any of its children are not "tabbable" (accessible by keyboard keys such as the <code>a</code> and <code>button</code> elements or any elements with a positive <code>tabindex</code>), a <code>tabindex</code> of <code>0</code> will be added by default to the list item. This behaviour is arguably not always appropriate - generally, only interactive controls/content should be focusable. If you want to suppress this behaviour, make sure to include <code>tabindex="-1"</code> as part of the outermost element of your template.</p> <p> </p><div class="ap-m-tip"> <div class="ap-a-ico ap-m-tip-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#warning-sign"/></svg> </div> <div class="ap-m-tip-content"> Currently, the rendered list element is declared as an ARIA live region (using <code>aria-live="polite"</code>), meaning that any change to the content of the list results in the entire list being read out/announced by assistive technologies (such as screen readers). Due to the way lists are initially rendered, this can also result in lists being announced in their entirety when a page is loaded. To work around this issue for now, you can add <code>aria-live="off"</code> to <code><amp-list></code>, which will override the addition of <code>aria-live="polite"</code>. </div> </div><p></p> <p> </p><div class="ap-m-tip"> <div class="ap-a-ico ap-m-tip-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#speech-bubble"/></svg> </div> <div class="ap-m-tip-content"> Note also that a good practice is to provide templates a single top-level element to prevent unintended side effects. This means the following input:<p></p> <div class="-ta"><pre><span></span><span class="p"><</span><span class="nt">template</span> <span class="na">type</span><span class="o">=</span><span class="s">"amp-mustache"</span><span class="p">></span> <span class="p"><</span><span class="nt">div</span> <span class="na">class</span><span class="o">=</span><span class="s">"item"</span><span class="p">></span>{{item}}<span class="p"></</span><span class="nt">div</span><span class="p">></span> <span class="p"><</span><span class="nt">div</span> <span class="na">class</span><span class="o">=</span><span class="s">"price"</span><span class="p">></span>{{price}}<span class="p"></</span><span class="nt">div</span><span class="p">></span> <span class="p"></</span><span class="nt">template</span><span class="p">></span> </pre></div> <p>Would most predictably be applied and rendered if instead provided as follows:</p> <div class="-ta"><pre><span></span><span class="p"><</span><span class="nt">template</span> <span class="na">type</span><span class="o">=</span><span class="s">"amp-mustache"</span><span class="p">></span> <span class="p"><</span><span class="nt">div</span><span class="p">></span> <span class="p"><</span><span class="nt">div</span> <span class="na">class</span><span class="o">=</span><span class="s">"item"</span><span class="p">></span>{{item}}<span class="p"></</span><span class="nt">div</span><span class="p">></span> <span class="p"><</span><span class="nt">div</span> <span class="na">class</span><span class="o">=</span><span class="s">"price"</span><span class="p">></span>{{price}}<span class="p"></</span><span class="nt">div</span><span class="p">></span> <span class="p"></</span><span class="nt">div</span><span class="p">></span> <span class="p"></</span><span class="nt">template</span><span class="p">></span> </pre></div> <p> </p></div> </div><p></p> <h3 id="xhr-batching">XHR batching</h3> <p>AMP batches XMLHttpRequests (XHRs) to JSON endpoints, that is, you can use a single JSON data request as a data source for multiple consumers (e.g., multiple <code><amp-list></code> elements) on an AMP page. For example, if your <code><amp-list></code> makes an XHR to an endpoint, while the XHR is in flight, all subsequent XHRs to the same endpoint won't trigger and will instead return the results from the first XHR.</p> <p>In <code><amp-list></code>, you can use the <a href="#items"><code>items</code></a> attribute to render a subset of the JSON response, allowing you to have multiple <code><amp-list></code> elements rendering different content but sharing a single XHR.</p> <h3 id="specifying-an-overflow">Specifying an overflow</h3> <p>Optionally, the <code><amp-list></code> component can contain an element with the <code>overflow</code> attribute. AMP will display this element if all of the following conditions are met:</p> <ul> <li>The contents rendered into the <code>amp-list</code> exceed its specified size.</li> <li>The bottom of <code>amp-list</code> is within the viewport.</li> <li>The bottom of <code>amp-list</code> is not near the bottom of the page (defined as the minimum of either the bottom 15% of the document or the bottom 1000px)</li> </ul> <p>If <code>amp-list</code> is outside the viewport, it will be automatically expanded.</p> <p><em>Example: Displaying an overflow when the list needs more space</em></p> <p>In the following example, we display a list of images and titles. Because the <code><amp-list></code> content requires more space than available, the AMP framework displays the overflow element.</p><div class="ap-code-preview inline"> <div class="ap-code-preview-preview"> <amp-list width="auto" height="140" layout="fixed-height" src="/static/inline-examples/data/amp-list-data.json" class="i-amphtml-layout-fixed-height i-amphtml-layout-size-defined" style="height:140px;" i-amphtml-layout="fixed-height"> <template type="amp-mustache"> <div class="image-entry"> <amp-img src="{{imageUrl}}" width="100" height="75"></amp-img> <span class="image-title">{{title}}</span> </div> </template> <div overflow class="list-overflow" style="background-color:red;"> See more </div> </amp-list> </div> <div class="-ta"><pre><span></span><span class="p"><</span><span class="nt">amp-list</span> <span class="na">width</span><span class="o">=</span><span class="s">"auto"</span> <span class="na">height</span><span class="o">=</span><span class="s">"140"</span> <span class="na">layout</span><span class="o">=</span><span class="s">"fixed-height"</span> <span class="na">src</span><span class="o">=</span><span class="s">"/static/inline-examples/data/amp-list-data.json"</span> <span class="p">></span> <span class="p"><</span><span class="nt">template</span> <span class="na">type</span><span class="o">=</span><span class="s">"amp-mustache"</span><span class="p">></span> <span class="p"><</span><span class="nt">div</span> <span class="na">class</span><span class="o">=</span><span class="s">"image-entry"</span><span class="p">></span> <span class="p"><</span><span class="nt">amp-img</span> <span class="na">src</span><span class="o">=</span><span class="s">"{{imageUrl}}"</span> <span class="na">width</span><span class="o">=</span><span class="s">"100"</span> <span class="na">height</span><span class="o">=</span><span class="s">"75"</span><span class="p">></</span><span class="nt">amp-img</span><span class="p">></span> <span class="p"><</span><span class="nt">span</span> <span class="na">class</span><span class="o">=</span><span class="s">"image-title"</span><span class="p">></span>{{title}}<span class="p"></</span><span class="nt">span</span><span class="p">></span> <span class="p"></</span><span class="nt">div</span><span class="p">></span> <span class="p"></</span><span class="nt">template</span><span class="p">></span> <span class="p"><</span><span class="nt">div</span> <span class="na">overflow</span> <span class="na">class</span><span class="o">=</span><span class="s">"list-overflow"</span> <span class="na">style</span><span class="o">=</span><span class="s">"background-color:red;"</span><span class="p">></span> See more <span class="p"></</span><span class="nt">div</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-list</span><span class="p">></span> </pre></div> </div> <a href="https://playground.amp.dev/?url=https%3A//preview.amp.dev/de/documentation/components/amp-list.example.2.html%3Fformat%3Dwebsites" class="-n ap--playground-link"> <div class="ap-a-ico -i"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg> </div> <span class="-r">Dieses Snippet im Playground öffnen</span> </a> <p>AMP applies the following CSS to elements with the <code>overflow</code> attribute:</p> <div class="-ta"><pre><span></span><span class="p">.</span><span class="nc">list-overflow</span><span class="o">[</span><span class="nt">overflow</span><span class="o">]</span> <span class="p">{</span> <span class="k">position</span><span class="p">:</span> <span class="kc">absolute</span><span class="p">;</span> <span class="k">bottom</span><span class="p">:</span> <span class="mi">0</span><span class="p">;</span> <span class="k">left</span><span class="p">:</span> <span class="mi">0</span><span class="p">;</span> <span class="k">right</span><span class="p">:</span> <span class="mi">0</span><span class="p">;</span> <span class="p">}</span> </pre></div> <h3 id="placeholder-and-fallback">Placeholder and fallback</h3> <p>Optionally, <code><amp-list></code> supports a placeholder and/or fallback.</p> <ul> <li>A <em>placeholder</em> is a child element with the <code>placeholder</code> attribute. This element is shown until the <code><amp-list></code> loads successfully. If a fallback is also provided, the placeholder is hidden when the <code><amp-list></code> fails to load.</li> <li>A <em>fallback</em> is a child element with the <code>fallback</code> attribute. This element is shown if the <code><amp-list></code> fails to load.</li> </ul> <p>Learn more in <a href="https://amp.dev/documentation/guides-and-tutorials/develop/style_and_layout/placeholders">Placeholders & Fallbacks</a>. Note that a child element cannot be both a placeholder and a fallback.</p> <div class="-ta"><pre><span></span><span class="p"><</span><span class="nt">amp-list</span> <span class="na">src</span><span class="o">=</span><span class="s">"https://foo.com/list.json"</span><span class="p">></span> <span class="p"><</span><span class="nt">div</span> <span class="na">placeholder</span><span class="p">></span>Loading ...<span class="p"></</span><span class="nt">div</span><span class="p">></span> <span class="p"><</span><span class="nt">div</span> <span class="na">fallback</span><span class="p">></span>Failed to load data.<span class="p"></</span><span class="nt">div</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-list</span><span class="p">></span> </pre></div> <h3 id="refreshing-data">Refreshing data</h3> <p>The <code><amp-list></code> element exposes a <code>refresh</code> action that other elements can reference in <code>on="tap:..."</code> attributes.</p> <div class="-ta"><pre><span></span><span class="p"><</span><span class="nt">button</span> <span class="na">on</span><span class="o">=</span><span class="s">"tap:myList.refresh"</span><span class="p">></span>Refresh List<span class="p"></</span><span class="nt">button</span><span class="p">></span> <span class="p"><</span><span class="nt">amp-list</span> <span class="na">id</span><span class="o">=</span><span class="s">"myList"</span> <span class="na">src</span><span class="o">=</span><span class="s">"https://foo.com/list.json"</span><span class="p">></span> <span class="p"><</span><span class="nt">template</span> <span class="na">type</span><span class="o">=</span><span class="s">"amp-mustache"</span><span class="p">></span> <span class="p"><</span><span class="nt">div</span><span class="p">></span>{{title}}<span class="p"></</span><span class="nt">div</span><span class="p">></span> <span class="p"></</span><span class="nt">template</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-list</span><span class="p">></span> </pre></div> <h3 id="dynamic-resizing">Dynamic resizing</h3> <p> </p> <p>In several cases, we may need the <code><amp-list></code> to resize on user interaction. For example, when the <code><amp-list></code> contains an amp-accordion that a user may tap on, when the contents of the <code><amp-list></code> change size due to bound CSS classes, or when the number of items inside an <code><amp-list></code> changes due to a bound <code>[src]</code> attribute. The <code>changeToLayoutContainer</code> action handles this by changing the amp list to <code>layout="CONTAINER"</code> when triggering this action. See the following example:</p> <p> </p> <p> </p> <div class="-ta"><pre><span></span><span class="p"><</span><span class="nt">button</span> <span class="na">on</span><span class="o">=</span><span class="s">"tap:list.changeToLayoutContainer()"</span><span class="p">></span>Show Grid<span class="p"></</span><span class="nt">button</span><span class="p">></span> <span class="p"><</span><span class="nt">amp-list</span> <span class="na">id</span><span class="o">=</span><span class="s">"list"</span> <span class="na">width</span><span class="o">=</span><span class="s">"396"</span> <span class="na">height</span><span class="o">=</span><span class="s">"80"</span> <span class="na">layout</span><span class="o">=</span><span class="s">"responsive"</span> <span class="na">src</span><span class="o">=</span><span class="s">"/test/manual/amp-list-data.json?RANDOM"</span> <span class="p">></span> <span class="p"><</span><span class="nt">template</span> <span class="na">type</span><span class="o">=</span><span class="s">"amp-mustache"</span><span class="p">></span> {{title}} <span class="p"></</span><span class="nt">template</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-list</span><span class="p">></span> </pre></div> <p> </p> <h3 id="initialization-from-amp-state">Initialization from amp-state</h3> <p>In most cases, you’ll probably want to have <code><amp-list></code> request JSON from a server. But <code><amp-list></code> can also use JSON you’ve included in an <code><amp-state></code>, right there in your HTML! This means rendering can occur without an additional server call, although, of course, if your page is served from an AMP cache, the data may not be fresh.</p> <p>Here’s how to have <code><amp-list></code> render from an <code><amp-state></code>:</p> <ol> <li>Add the <a href="https://amp.dev/documentation/components/amp-bind/">amp-bind</a> script to your document's <code><head></code>.</li> <li>Use the <code>amp-state:</code> protocol in your <code><amp-list></code>’s src attribute, like this: <code><amp-list src="amp-state:localState"></code></li> </ol> <p>Note that <code><amp-list></code> treats your JSON in the same way whether it’s requested from your server or pulled from a state variable. The format required doesn’t change.</p> <p>See below for a full example,</p> <div class="-ta"><pre><span></span><span class="p"><</span><span class="nt">amp-state</span> <span class="na">id</span><span class="o">=</span><span class="s">"localState"</span><span class="p">></span> <span class="p"><</span><span class="nt">script</span> <span class="na">type</span><span class="o">=</span><span class="s">"application/json"</span><span class="p">></span> <span class="p">{</span> <span class="s2">"items"</span><span class="o">:</span> <span class="p">[{</span><span class="s2">"id"</span><span class="o">:</span> <span class="mi">1</span><span class="p">},</span> <span class="p">{</span><span class="s2">"id"</span><span class="o">:</span> <span class="mi">2</span><span class="p">},</span> <span class="p">{</span><span class="s2">"id"</span><span class="o">:</span> <span class="mi">2</span><span class="p">}]</span> <span class="p">}</span> <span class="p"></</span><span class="nt">script</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-state</span><span class="p">></span> <span class="p"><</span><span class="nt">amp-list</span> <span class="na">src</span><span class="o">=</span><span class="s">"amp-state:localState"</span><span class="p">></span> <span class="p"><</span><span class="nt">template</span> <span class="na">type</span><span class="o">=</span><span class="s">"amp-mustache"</span><span class="p">></span> <span class="p"><</span><span class="nt">li</span><span class="p">></span>{{id}}<span class="p"></</span><span class="nt">li</span><span class="p">></span> <span class="p"></</span><span class="nt">template</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-list</span><span class="p">></span> </pre></div> <h3 id="using-amp-script-as-a-data-source">Using amp-script as a data source</h3> <p>You may use an exported <code><amp-script></code> function as the data source for <code><amp-list></code>. This enables you to flexibly combine and transform server responses before handoff to <code><amp-list></code>. The required format is the <code><amp-script></code> ID and the function name separated by a period, e.g. <code>amp-script:id.functionName</code>.</p> <p>See below for an example:</p> <div class="-ta"><pre><span></span><span class="c"><!--</span> <span class="c"> See the [amp-script](https://amp.dev/documentation/components/amp-script/) documentation to setup the component and export your function></span> <span class="c">--></span> <span class="p"><</span><span class="nt">amp-script</span> <span class="na">id</span><span class="o">=</span><span class="s">"dataFunctions"</span> <span class="na">script</span><span class="o">=</span><span class="s">"local-script"</span> <span class="na">nodom</span><span class="p">></</span><span class="nt">amp-script</span><span class="p">></span> <span class="p"><</span><span class="nt">script</span> <span class="na">id</span><span class="o">=</span><span class="s">"local-script"</span> <span class="na">type</span><span class="o">=</span><span class="s">"text/plain"</span> <span class="na">target</span><span class="o">=</span><span class="s">"amp-script"</span><span class="p">></span> <span class="kd">function</span> <span class="nx">getRemoteData</span><span class="p">()</span> <span class="p">{</span> <span class="k">return</span> <span class="nx">fetch</span><span class="p">(</span><span class="s1">'https://example.com'</span><span class="p">)</span> <span class="p">.</span><span class="nx">then</span><span class="p">(</span><span class="nx">resp</span> <span class="p">=></span> <span class="nx">resp</span><span class="p">.</span><span class="nx">json</span><span class="p">())</span> <span class="p">.</span><span class="nx">then</span><span class="p">(</span><span class="nx">transformData</span><span class="p">)</span> <span class="p">}</span> <span class="nx">exportFunction</span><span class="p">(</span><span class="s1">'getRemoteData'</span><span class="p">,</span> <span class="nx">getRemoteData</span><span class="p">);</span> <span class="p"></</span><span class="nt">script</span><span class="p">></span> <span class="c"><!-- "exported-functions" is the <amp-script> id, and "getRemoteData" corresponds to the exported function. --></span> <span class="p"><</span><span class="nt">amp-list</span> <span class="na">id</span><span class="o">=</span><span class="s">"amp-list"</span> <span class="na">width</span><span class="o">=</span><span class="s">"auto"</span> <span class="na">height</span><span class="o">=</span><span class="s">"100"</span> <span class="na">layout</span><span class="o">=</span><span class="s">"fixed-height"</span> <span class="na">src</span><span class="o">=</span><span class="s">"amp-script:dataFunctions.getRemoteData"</span> <span class="p">></span> <span class="p"><</span><span class="nt">template</span> <span class="na">type</span><span class="o">=</span><span class="s">"amp-mustache"</span><span class="p">></span> <span class="p"><</span><span class="nt">div</span><span class="p">></span>{{.}}<span class="p"></</span><span class="nt">div</span><span class="p">></span> <span class="p"></</span><span class="nt">template</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-list</span><span class="p">></span> </pre></div> <p> </p><div class="ap-m-tip"> <div class="ap-a-ico ap-m-tip-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#warning-sign"/></svg> </div> <div class="ap-m-tip-content"> When using <code><amp-script></code> as merely a data-layer with no DOM manipulation, you may benefit from the <a href="https://amp.dev/documentation/components/amp-script/#attributes">nodom</a> attribute. It improves the performance of the <code><amp-script></code>. </div> </div><p></p> <h3 id="load-more-and-infinite-scroll">Load more and infinite scroll</h3> <p>The <code>load-more</code> attribute has options <code>manual</code> and <code>auto</code> to allow pagination and infinite scroll.</p> <div class="-ta"><pre><span></span><span class="p"><</span><span class="nt">amp-list</span> <span class="na">load-more</span><span class="o">=</span><span class="s">"auto"</span> <span class="na">src</span><span class="o">=</span><span class="s">"https://my.rest.endpoint/"</span> <span class="na">width</span><span class="o">=</span><span class="s">"100"</span> <span class="na">height</span><span class="o">=</span><span class="s">"200"</span> <span class="p">></span> <span class="p"><</span><span class="nt">template</span> <span class="na">type</span><span class="o">=</span><span class="s">"amp-mustache"</span><span class="p">></span> // ... <span class="p"></</span><span class="nt">template</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-list</span><span class="p">></span> </pre></div> <p>For working examples, please see <a href="https://github.com/ampproject/amphtml/blob/main/extensions/amp-list/../../test/manual/amp-list/infinite-scroll-1.amp.html">test/manual/amp-list/infinite-scroll-1.amp.html</a> and <a href="https://github.com/ampproject/amphtml/blob/main/extensions/amp-list/../../test/manual/amp-list/infinite-scroll-1.amp.html">test/manual/amp-list/infinite-scroll-2.amp.html</a>.</p> <p> </p><div class="ap-m-tip"> <div class="ap-a-ico ap-m-tip-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#warning-sign"/></svg> </div> <div class="ap-m-tip-content"> <p></p> <p>When using <code><amp-list></code> infinite scroll, content placed below the component may not be accessible, and it is recommended to place the infinite scroll content at the bottom of the document.</p> <p>When using <code><amp-list></code> infinite scroll in conjunction with <code><amp-analytics></code> scroll triggers, it is recommended to make use of the <code>useInitialPageSize</code> property of <code><amp-analytics></code> to get a more accurate measurement of the scroll position that ignores the height changes caused by <code><amp-list></code>.</p> <p>Without <code>useInitialPageSize</code>, the <code>100%</code> scroll trigger point might never fire as more documents get loaded. Note that this will also ignore the size changes caused by other extensions (such as expanding embedded content) so some scroll events might fire prematurely instead. </p></div> </div><p></p> <h3 id="customizing-load-more-elements">Customizing load-more elements</h3> <p><code><amp-list></code> with the <code>load-more</code> attribute contains these UI elements: a load-more button, a loader, a load-failed element, and optionally an end-cap marking the end of the list. These elements can be customized by providing <code><amp-list-load-more></code> elements as children of <code><amp-list></code> with the following attributes:</p> <h4 id="load-more-button">load-more-button</h4> <p>An <code><amp-list-load-more></code> element with the <code>load-more-button</code> attribute, which shows up at the end of the list (for the manual load-more) if there are more elements to be loaded. Clicking on this element will trigger a fetch to load more elements from the url contained in the <code>load-more-src</code> field or the field of the data returned corresponding to the <code>load-more-bookmark</code> attribute. This element can be customized by providing <code><amp-list></code> with a child element that has the attribute <code>load-more-button</code>.</p> <h3 id="accessibility-considerations-for-infinite-scroll-lists">Accessibility considerations for infinite scroll lists</h3> <p>Be careful when using infinite scroll lists - if there is any content after the list (including a standard footer or similar), users won't be able to reach it until all list items have been loaded/displayed. This can make the experience frustrating or even impossible to overcome for users. See <a href="https://adrianroselli.com/2014/05/so-you-think-you-built-good-infinite.html">Adrian Roselli: So you think you've built a good infinite scroll</a>.</p> <h5 id="example:">Example:</h5> <div class="-ta"><pre><span></span><span class="p"><</span><span class="nt">amp-list</span> <span class="na">load-more</span><span class="o">=</span><span class="s">"manual"</span> <span class="na">src</span><span class="o">=</span><span class="s">"https://www.load.more.example.com/"</span> <span class="na">width</span><span class="o">=</span><span class="s">"400"</span> <span class="na">height</span><span class="o">=</span><span class="s">"800"</span> <span class="p">></span> ... <span class="p"><</span><span class="nt">amp-list-load-more</span> <span class="na">load-more-button</span><span class="p">></span> <span class="c"><!-- My custom see more button --></span> <span class="p"><</span><span class="nt">button</span><span class="p">></span>See More<span class="p"></</span><span class="nt">button</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-list-load-more</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-list</span><span class="p">></span> </pre></div> <p>It can be templated via <code>amp-mustache</code>.</p> <h5 id="example:_1">Example:</h5> <div class="-ta"><pre><span></span><span class="p"><</span><span class="nt">amp-list</span> <span class="na">load-more</span><span class="o">=</span><span class="s">"auto"</span> <span class="na">width</span><span class="o">=</span><span class="s">"100"</span> <span class="na">height</span><span class="o">=</span><span class="s">"500"</span> <span class="na">src</span><span class="o">=</span><span class="s">"https://www.load.more.example.com/"</span> <span class="p">></span> ... <span class="p"><</span><span class="nt">amp-list-load-more</span> <span class="na">load-more-button</span><span class="p">></span> <span class="p"><</span><span class="nt">template</span> <span class="na">type</span><span class="o">=</span><span class="s">"amp-mustache"</span><span class="p">></span> Showing {{#count}} out of {{#total}} items <span class="p"><</span><span class="nt">button</span><span class="p">></span>Click here to see more!<span class="p"></</span><span class="nt">button</span><span class="p">></span> <span class="p"></</span><span class="nt">template</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-list-load-more</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-list</span><span class="p">></span> </pre></div> <h4 id="load-more-loading"><code>load-more-loading</code></h4> <p>This element is a loader that will be displayed if the user reaches the end of the list and the contents are still loading, or as a result of clicking on the <code>load-more-button</code> element (while the new children of the <code><amp-list></code> are still loading). This element can be customized by providing <code><amp-list></code> with a child element that has the attribute <code>load-more-loading</code>. Example below:</p> <div class="-ta"><pre><span></span><span class="p"><</span><span class="nt">amp-list</span> <span class="na">load-more</span><span class="o">=</span><span class="s">"auto"</span> <span class="na">src</span><span class="o">=</span><span class="s">"https://www.load.more.example.com/"</span> <span class="na">width</span><span class="o">=</span><span class="s">"400"</span> <span class="na">height</span><span class="o">=</span><span class="s">"800"</span> <span class="p">></span> ... <span class="p"><</span><span class="nt">amp-list-load-more</span> <span class="na">load-more-loading</span><span class="p">></span> <span class="c"><!-- My custom loader --></span> <span class="p"><</span><span class="nt">svg</span><span class="p">></span>...<span class="p"></</span><span class="nt">svg</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-list-load-more</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-list</span><span class="p">></span> </pre></div> <h4 id="load-more-failed"><code>load-more-failed</code></h4> <p>A <code><amp-list-load-more></code> element containing the <code>load-more-failed</code> attribute that contains a button with the <code>load-more-clickable</code> attribute that will be displayed at the bottom of the <code><amp-list></code> if loading failed. Clicking on this element will trigger a reload of the url that failed. This element can be customized by providing <code><amp-list></code> with a child element that has the attribute <code>load-more-failed</code>. Example below:</p> <div class="-ta"><pre><span></span><span class="p"><</span><span class="nt">amp-list</span> <span class="na">load-more</span><span class="o">=</span><span class="s">"auto"</span> <span class="na">src</span><span class="o">=</span><span class="s">"https://www.load.more.example.com/"</span> <span class="na">width</span><span class="o">=</span><span class="s">"200"</span> <span class="na">height</span><span class="o">=</span><span class="s">"500"</span> <span class="p">></span> ... <span class="p"><</span><span class="nt">amp-list-load-more</span> <span class="na">load-more-failed</span><span class="p">></span> <span class="p"><</span><span class="nt">button</span><span class="p">></span>Unable to Load More<span class="p"></</span><span class="nt">button</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-list-load-more</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-list</span><span class="p">></span> </pre></div> <p>In the above example, the entire <code>load-more-failed</code> element is clickable. However, a common pattern for this element is a general unclickable "loading failed" element that contains a clickable "reload" button. To account for this, you can have a generally unclickable element with a button containing the <code>load-more-clickable</code> element. For example:</p> <div class="-ta"><pre><span></span><span class="p"><</span><span class="nt">amp-list</span> <span class="na">load-more</span><span class="o">=</span><span class="s">"auto"</span> <span class="na">src</span><span class="o">=</span><span class="s">"https://www.load.more.example.com/"</span> <span class="na">width</span><span class="o">=</span><span class="s">"200"</span> <span class="na">height</span><span class="o">=</span><span class="s">"500"</span> <span class="p">></span> ... <span class="p"><</span><span class="nt">amp-list-load-more</span> <span class="na">load-more-failed</span><span class="p">></span> <span class="p"><</span><span class="nt">div</span><span class="p">></span> Here is some unclickable text saying sorry loading failed. <span class="p"></</span><span class="nt">div</span><span class="p">></span> <span class="p"><</span><span class="nt">button</span> <span class="na">load-more-clickable</span><span class="p">></span>Click me to reload!<span class="p"></</span><span class="nt">button</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-list-load-more</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-list</span><span class="p">></span> </pre></div> <h4 id="load-more-end"><code>load-more-end</code></h4> <p>This element is not provided by default, but if a <code><amp-list-load-more></code> element containing the <code>load-more-end</code> attribute is attached to <code><amp-list></code> as a child element, this element will be displayed at the bottom of the <code><amp-list></code> if there are no more items. This element can be templated via <code>amp-mustache</code>. Example below:</p> <div class="-ta"><pre><span></span><span class="p"><</span><span class="nt">amp-list</span> <span class="na">load-more</span><span class="o">=</span><span class="s">"auto"</span> <span class="na">src</span><span class="o">=</span><span class="s">"https://www.load.more.example.com/"</span> <span class="na">width</span><span class="o">=</span><span class="s">"200"</span> <span class="na">height</span><span class="o">=</span><span class="s">"500"</span> <span class="p">></span> ... <span class="p"><</span><span class="nt">amp-list-load-more</span> <span class="na">load-more-end</span><span class="p">></span> <span class="c"><!-- Custom load-end element --></span> Congratulations! You've reached the end. <span class="p"></</span><span class="nt">amp-list-load-more</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-list</span><span class="p">></span> </pre></div> <h3 id="substitutions">Substitutions</h3> <p>The <code><amp-list></code> allows all standard URL variable substitutions. See the <a href="https://github.com/ampproject/amphtml/blob/main/extensions/amp-list/../../docs/spec/amp-var-substitutions.md">Substitutions Guide</a> for more info.</p> <p>For example:</p> <div class="-ta"><pre><span></span><span class="p"><</span><span class="nt">amp-list</span> <span class="na">src</span><span class="o">=</span><span class="s">"https://foo.com/list.json?RANDOM"</span><span class="p">></</span><span class="nt">amp-list</span><span class="p">></span> </pre></div> <p>may make a request to something like <code>https://foo.com/list.json?0.8390278471201</code> where the RANDOM value is randomly generated upon each impression.</p> <p> </p> <h2 id="attributes">Attributes</h2> <h3 id="src-(required)"><code>src</code> (required)</h3> <p> </p> <p>The URL of the remote endpoint that returns the JSON that will be rendered within this <code><amp-list></code>. There are three valid protocols for the <code>src</code> attribute.</p> <ol> <li><strong>https</strong>: This must refer to a CORS HTTP service. Insecure HTTP is not supported.</li> <li><strong>amp-state</strong>: For initializing from <code><amp-state></code> data. See <a href="#initialization-from-amp-state">Initialization from <code><amp-state></code></a> for more details.</li> <li><strong>amp-script</strong>: For using <code><amp-script></code> functions as the data source. See <a href="#using-amp-script-as-a-data-source">Using <code><amp-script></code> as a data source</a> for more details.</li> </ol> <p> </p> <p> </p> <p> </p><div class="ap-m-tip"> <div class="ap-a-ico ap-m-tip-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#warning-sign"/></svg> </div> <div class="ap-m-tip-content"> Your endpoint must implement the requirements specified in the <a href="https://www.ampproject.org/docs/fundamentals/amp-cors-requests">CORS Requests in AMP</a> spec. </div> </div><p></p> <p>If fetching the data at the <code>src</code> URL fails, the <code><amp-list></code> triggers a low-trust <code>fetch-error</code> event.</p> <p> </p> <p>The <code>src</code> attribute may be omitted if the <code>[src]</code> attribute exists. <code>[src]</code> supports URL and non-URL expression values; see <code>amp-list</code> in <a href="https://amp.dev/documentation/components/amp-bind/#element-specific-attributes"><code>amp-bind</code> element specific attributes documentation</a> for details.</p> <p> </p> <p> </p> <h3 id="credentials"><code>credentials</code></h3> <p>Defines a <code>credentials</code> option as specified by the <a href="https://fetch.spec.whatwg.org/">Fetch API</a>.</p> <ul> <li>Supported values: <code>omit</code>, <code>include</code></li> <li>Default: <code>omit</code></li> </ul> <p>To send credentials, pass the value of <code>include</code>. If this value is set, the response must follow the <a href="https://amp.dev/documentation/guides-and-tutorials/learn/amp-caches-and-cors/amp-cors-requests/#cors-security-in-amp">AMP CORS security guidelines</a>.</p> <p>Here's an example that specifies including credentials to display personalized content in a list:</p> <div class="-ta"><pre><span></span><span class="p"><</span><span class="nt">amp-list</span> <span class="na">credentials</span><span class="o">=</span><span class="s">"include"</span> <span class="na">src</span><span class="o">=</span><span class="s">"<%host%>/json/product.json?clientId=CLIENT_ID(myCookieId)"</span> <span class="p">></span> <span class="p"><</span><span class="nt">template</span> <span class="na">type</span><span class="o">=</span><span class="s">"amp-mustache"</span><span class="p">></span> Your personal offer: ${{price}} <span class="p"></</span><span class="nt">template</span><span class="p">></span> <span class="p"></</span><span class="nt">amp-list</span><span class="p">></span> </pre></div> <p> </p> <h3 id="items"><code>items</code></h3> <p>Defines the expression to locate the array to be rendered within the response. This is a dot-notated expression that navigates via fields of the JSON response. By defaut <code><amp-list></code> expects an array, the <code>single-item</code> attribute may be used to load data from an object.</p> <ul> <li>The default value is <code>"items"</code>. The expected response: <code>{items: [...]}</code>.</li> <li>If the response itself is the desired array, use the value of <code>"."</code>. The expected response is: <code>[...]</code>.</li> <li>Nested navigation is permitted (e.g., <code>"field1.field2"</code>). The expected response is: <code>{field1: {field2: [...]}}</code>.</li> </ul> <p>When <code>items="items"</code> is specified (which, is the default) the response must be a JSON object that contains an array property called <code>"items"</code>:</p> <div class="-ta"><pre><span></span>{ "items": [...] } </pre></div> <h3 id="max-items"><code>max-items</code></h3> <p>An integer value specifying the maximum length of the items array to be rendered. The <code>items</code> array will be truncated to <code>max-items</code> entries if the returned value exceeds <code>max-items</code>.</p> <h3 id="single-item"><code>single-item</code></h3> <p>Causes <code><amp-list></code> to treat the returned result as if it were a single element array. An object response will be wrapped in an array so <code>{items: {...}}</code> will behave as if it were <code>{items: [{...}]}</code>.</p> <p> </p> <h3 id="xssi-prefix"><code>xssi-prefix</code></h3> <p>Causes <code><amp-list></code> to strip a prefix from the fetched JSON before parsing. This can be useful for APIs that include <a href="http://patorjk.com/blog/2013/02/05/crafty-tricks-for-avoiding-xssi/">security prefixes</a> like <code>)]}</code> to help prevent cross site scripting attacks.</p> <p>For example, lets say we had an API that returned this response:</p> <div class="-ta"><pre><span></span>)]}{ "items": ["value"] } </pre></div> <p>We could instruct <code>amp-list</code> to remove the security prefix like so:</p> <div class="-ta"><pre><span></span><span class="p"><</span><span class="nt">amp-list</span> <span class="na">xssi-prefix</span><span class="o">=</span><span class="s">")]}"</span> <span class="na">src</span><span class="o">=</span><span class="s">"https://foo.com/list.json"</span><span class="p">></</span><span class="nt">amp-list</span><span class="p">></span> </pre></div> <p> </p> <p> </p> <h3 id="reset-on-refresh"><code>reset-on-refresh</code></h3> <p>Displays a loading indicator and placeholder again when the list's source is refreshed via <code>amp-bind</code> or the <code>refresh()</code> action.</p> <p>By default, this will only trigger on refreshes that cause a network fetch. To reset on all refreshes, use <code>reset-on-refresh="always"</code>.</p> <p> </p> <h3 id="binding"><code>binding</code></h3> <p>For pages using <code><amp-list></code> that also use <code>amp-bind</code>, controls whether or not to block render on the evaluation of bindings (e.g. <code>[text]</code>) in rendered children.</p> <p>We recommend using <code>binding="no"</code> or <code>binding="refresh"</code> for faster performance.</p> <ul> <li><code>binding="no"</code>: Never block render <strong>(fastest)</strong>.</li> <li><code>binding="refresh"</code>: Don't block render on initial load <strong>(faster)</strong>.</li> <li><code>binding="always"</code>: Always block render <strong>(slow)</strong>.</li> </ul> <p>If <code>binding</code> attribute is not provided, default is <code>always</code>.</p> <p> </p> <h3 id="[is-layout-container]"><code>[is-layout-container]</code></h3> <p>This is a bindable attribute that should always be <code>false</code> by default. When set to <code>true</code> via <code>amp-bind</code>, it changes the layout of the <code><amp-list></code> to <code>container</code>. This attribute is useful for handling dynamic resizing for amp-list.</p> <p>This attribute cannot be true by default for the same reason why <code><amp-list></code> does not support layout <code>CONTAINER</code> — it can cause content jumping on first load.</p> <p>Alternatively, one may also use the <code>changeToLayoutContainer</code> action.</p> <h4 id="load-more"><code>load-more</code></h4> <p>This attribute accepts two values: "auto" or "manual". Setting the value of this attribute to "manual" will show a "load-more" button at the end of <code><amp-list></code>. Setting the value of this attribute to "auto" will cause <code><amp-list></code> to automatically load more elements three viewports down for an infinite scroll effect.</p> <h4 id="load-more-bookmark"><code>load-more-bookmark</code></h4> <p>This attribute specifies a field name in the returned data that will give the url of the next items to load. If this attribute is not specified, <code><amp-list></code> expects the json payload to have the <code>load-more-src</code> field, which corresponds to the next url to load. In the case where this field is called something else, you can specify the name of that field via the <code>load-more-bookmark</code> field.E.g. In the following sample payload, we would specify <code>load-more-bookmark="next"</code>.</p> <div class="-ta"><pre><span></span><span class="p">{</span> <span class="s2">"items"</span><span class="o">:</span> <span class="p">[...],</span> <span class="s2">"next"</span><span class="o">:</span> <span class="s2">"https://url.to.load"</span> <span class="p">}</span> </pre></div> <p> </p> <h3 id="common-attributes">Common attributes</h3> <p>This element includes <a href="https://amp.dev/documentation/guides-and-tutorials/learn/common_attributes">common attributes</a> extended to AMP components.</p> <p> </p> <h2 id="validation">Validation</h2> <p>See <a href="https://github.com/ampproject/amphtml/blob/main/extensions/amp-list/validator-amp-list.protoascii">amp-list rules</a> in the AMP validator specification.</p> </section> <section class="ap--help"> <div class="-li"> <span class="-ls">Benötigst du noch Hilfe?</span> <p class="-lu">Du hast dieses Dokument mehrmals gelesen, hast aber immer noch Fragen? Vielleicht hatten andere Nutzer das gleiche Problem: Schau doch bei Stack Overflow vorbei und lass dir von ihnen helfen.</p> <a href="https://stackoverflow.com/questions/tagged/amp-html" rel="noopener" class="-n"> <svg class="ap-a-ico -i"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#external"/></svg> <span class="-r">Zu Stack Overflow wechseln</span> </a> <div class="-la"></div> <span class="-ls">Möchtest du einen Bug oder ein fehlendes Feature melden?</span> <p class="-lu">Das AMP Projekt ist auf deine Teilnahme und deine Beiträge angewiesen! Wir hoffen natürlich, dass du dich aktiv an unserer Open Source Community beteiligen wirst. 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