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232 lines
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<!DOCTYPE html><html><head><title>ListView</title><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"><meta name="viewport" content="width=device-width"><meta property="fb:app_id" content="1677033832619985"><meta property="fb:admins" content="121800083"><meta property="og:site_name" content="React Native"><meta property="og:title" content="ListView"><meta property="og:url" content="https://facebook.github.io/react-native/index.html"><meta property="og:image" content="https://facebook.github.io/react-native/img/opengraph.png"><meta property="og:description" content="A framework for building native apps using React"><meta name="twitter:site" content="@reactnative"><meta name="twitter:card" content="summary_large_image"><meta property="og:type" content="website"><base href="/react-native/"><link rel="stylesheet" href="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.css"><link rel="shortcut icon" href="img/favicon.png?2"><link rel="stylesheet" href="css/react-native.css"><link rel="alternate" type="application/rss+xml" title="React Native Blog" href="https://facebook.github.io/react-native/blog/feed.xml"><link href="//cdn-images.mailchimp.com/embedcode/horizontal-slim-10_7.css" rel="stylesheet" type="text/css"><script type="text/javascript" src="//use.typekit.net/vqa1hcx.js"></script><script type="text/javascript">try{Typekit.load();}catch(e){}</script></head><body><script>window.fbAsyncInit = function() {FB.init({appId:'1677033832619985',xfbml:true,version:'v2.7'});};(function(d, s, id){var js, fjs = d.getElementsByTagName(s)[0];if (d.getElementById(id)) {return;}js = d.createElement(s); js.id = id;js.src = '//connect.facebook.net/en_US/sdk.js';fjs.parentNode.insertBefore(js, fjs);}(document, 'script','facebook-jssdk'));</script><script>window.twttr=(function(d,s, id){var js,fjs=d.getElementsByTagName(s)[0],t=window.twttr||{};if(d.getElementById(id))return t;js=d.createElement(s);js.id=id;js.src='https://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js, fjs);t._e = [];t.ready = function(f) {t._e.push(f);};return t;}(document, 'script', 'twitter-wjs'));</script><div class="container"><div class="nav-main"><div class="wrap"><a class="nav-home" href=""><img src="img/header_logo.png">React Native</a><a class="nav-version" href="/react-native/versions.html">0.40</a><div class="nav-site-wrapper"><ul class="nav-site nav-site-internal"><li><a href="docs/getting-started.html" class="active" data-target=".nav-docs">Docs</a></li><li><a href="/react-native/support.html" class="">Help</a></li><li><a href="/react-native/showcase.html" class="">Showcase</a></li><li><a href="/react-native/blog/" class="">Blog</a></li></ul><div class="algolia-search-wrapper"><input id="algolia-doc-search" tabindex="0" type="text" placeholder="Search docs..."></div><ul class="nav-site nav-site-external"><li><a href="https://github.com/facebook/react-native" class="">GitHub</a></li><li><a href="http://facebook.github.io/react" class="">React</a></li></ul></div></div></div><section class="content wrap documentationContent"><div class="nav-docs"><div class="nav-docs-viewport"><div class="nav-docs-section"><h3>The Basics</h3><ul><li><a style="margin-left:0;" class="" href="docs/getting-started.html">Getting Started</a></li><li><a style="margin-left:0;" class="" href="docs/tutorial.html">Tutorial</a></li><li><a style="margin-left:0;" class="" href="docs/props.html">Props</a></li><li><a style="margin-left:0;" class="" href="docs/state.html">State</a></li><li><a style="margin-left:0;" class="" href="docs/style.html">Style</a></li><li><a style="margin-left:0;" class="" href="docs/height-and-width.html">Height and Width</a></li><li><a style="margin-left:0;" class="" href="docs/flexbox.html">Layout with Flexbox</a></li><li><a style="margin-left:0;" class="" href="docs/handling-text-input.html">Handling Text Input</a></li><li><a style="margin-left:0;" class="" href="docs/using-a-scrollview.html">Using a ScrollView</a></li><li><a style="margin-left:0;" class="" href="docs/using-a-listview.html">Using a ListView</a></li><li><a style="margin-left:0;" class="" href="docs/network.html">Networking</a></li><li><a style="margin-left:0;" class="" href="docs/using-navigators.html">Using Navigators</a></li><li><a style="margin-left:0;" class="" href="docs/more-resources.html">More Resources</a></li></ul></div><div class="nav-docs-section"><h3>Guides</h3><ul><li><a style="margin-left:0;" class="" href="docs/integration-with-existing-apps.html">Integration With Existing Apps</a></li><li><a style="margin-left:0;" class="" href="docs/colors.html">Colors</a></li><li><a style="margin-left:0;" class="" href="docs/images.html">Images</a></li><li><a style="margin-left:0;" class="" href="docs/handling-touches.html">Handling Touches</a></li><li><a style="margin-left:0;" class="" href="docs/animations.html">Animations</a></li><li><a style="margin-left:0;" class="" href="docs/accessibility.html">Accessibility</a></li><li><a style="margin-left:0;" class="" href="docs/timers.html">Timers</a></li><li><a style="margin-left:0;" class="" href="docs/direct-manipulation.html">Direct Manipulation</a></li><li><a style="margin-left:0;" class="" href="docs/debugging.html">Debugging</a></li><li><a style="margin-left:0;" class="" href="docs/testing.html">Testing</a></li><li><a style="margin-left:0;" class="" href="docs/running-on-device.html">Running On Device</a></li><li><a style="margin-left:0;" class="" href="docs/javascript-environment.html">JavaScript Environment</a></li><li><a style="margin-left:0;" class="" href="docs/navigation.html">Navigation</a></li><li><a style="margin-left:0;" class="" href="docs/performance.html">Performance</a></li><li><a style="margin-left:0;" class="" href="docs/understanding-cli.html">Understanding the CLI</a></li><li><a style="margin-left:0;" class="" href="docs/upgrading.html">Upgrading</a></li><li><a style="margin-left:0;" class="" href="docs/platform-specific-code.html">Platform Specific Code</a></li><li><a style="margin-left:0;" class="" href="docs/gesture-responder-system.html">Gesture Responder System</a></li></ul></div><div class="nav-docs-section"><h3>Guides (iOS)</h3><ul><li><a style="margin-left:0;" class="" href="docs/native-modules-ios.html">Native Modules</a></li><li><a style="margin-left:0;" class="" href="docs/native-components-ios.html">Native UI Components</a></li><li><a style="margin-left:0;" class="" href="docs/linking-libraries-ios.html">Linking Libraries</a></li><li><a style="margin-left:0;" class="" href="docs/running-on-simulator-ios.html">Running On Simulator</a></li><li><a style="margin-left:0;" class="" href="docs/communication-ios.html">Communication between native and React Native</a></li></ul></div><div class="nav-docs-section"><h3>Guides (Android)</h3><ul><li><a style="margin-left:0;" class="" href="docs/native-modules-android.html">Native Modules</a></li><li><a style="margin-left:0;" class="" href="docs/native-components-android.html">Native UI Components</a></li><li><a style="margin-left:0;" class="" href="docs/headless-js-android.html">Headless JS</a></li><li><a style="margin-left:0;" class="" href="docs/signed-apk-android.html">Generating Signed APK</a></li><li><a style="margin-left:0;" class="" href="docs/android-ui-performance.html">Profiling Android UI Performance</a></li><li><a style="margin-left:0;" class="" href="docs/android-building-from-source.html">Building React Native from source</a></li></ul></div><div class="nav-docs-section"><h3>components</h3><ul><li><a style="margin-left:0;" class="" href="docs/activityindicator.html">ActivityIndicator</a></li><li><a style="margin-left:0;" class="" href="docs/button.html">Button</a></li><li><a style="margin-left:0;" class="" href="docs/datepickerios.html">DatePickerIOS</a></li><li><a style="margin-left:0;" class="" href="docs/drawerlayoutandroid.html">DrawerLayoutAndroid</a></li><li><a style="margin-left:0;" class="" href="docs/image.html">Image</a></li><li><a style="margin-left:0;" class="" href="docs/keyboardavoidingview.html">KeyboardAvoidingView</a></li><li><a style="margin-left:0;" class="active" href="docs/listview.html">ListView</a></li><li><a style="margin-left:0;" class="" href="docs/mapview.html">MapView</a></li><li><a style="margin-left:0;" class="" href="docs/modal.html">Modal</a></li><li><a style="margin-left:0;" class="" href="docs/navigator.html">Navigator</a></li><li><a style="margin-left:0;" class="" href="docs/navigatorios.html">NavigatorIOS</a></li><li><a style="margin-left:0;" class="" href="docs/picker.html">Picker</a></li><li><a style="margin-left:0;" class="" href="docs/pickerios.html">PickerIOS</a></li><li><a style="margin-left:0;" class="" href="docs/progressbarandroid.html">ProgressBarAndroid</a></li><li><a style="margin-left:0;" class="" href="docs/progressviewios.html">ProgressViewIOS</a></li><li><a style="margin-left:0;" class="" href="docs/refreshcontrol.html">RefreshControl</a></li><li><a style="margin-left:0;" class="" href="docs/scrollview.html">ScrollView</a></li><li><a style="margin-left:0;" class="" href="docs/segmentedcontrolios.html">SegmentedControlIOS</a></li><li><a style="margin-left:0;" class="" href="docs/slider.html">Slider</a></li><li><a style="margin-left:0;" class="" href="docs/snapshotviewios.html">SnapshotViewIOS</a></li><li><a style="margin-left:0;" class="" href="docs/statusbar.html">StatusBar</a></li><li><a style="margin-left:0;" class="" href="docs/switch.html">Switch</a></li><li><a style="margin-left:0;" class="" href="docs/tabbarios.html">TabBarIOS</a></li><li><a style="margin-left:0;" class="" href="docs/tabbarios-item.html">TabBarIOS.Item</a></li><li><a style="margin-left:0;" class="" href="docs/text.html">Text</a></li><li><a style="margin-left:0;" class="" href="docs/textinput.html">TextInput</a></li><li><a style="margin-left:0;" class="" href="docs/toolbarandroid.html">ToolbarAndroid</a></li><li><a style="margin-left:0;" class="" href="docs/touchablehighlight.html">TouchableHighlight</a></li><li><a style="margin-left:0;" class="" href="docs/touchablenativefeedback.html">TouchableNativeFeedback</a></li><li><a style="margin-left:0;" class="" href="docs/touchableopacity.html">TouchableOpacity</a></li><li><a style="margin-left:0;" class="" href="docs/touchablewithoutfeedback.html">TouchableWithoutFeedback</a></li><li><a style="margin-left:0;" class="" href="docs/view.html">View</a></li><li><a style="margin-left:0;" class="" href="docs/viewpagerandroid.html">ViewPagerAndroid</a></li><li><a style="margin-left:0;" class="" href="docs/webview.html">WebView</a></li></ul></div><div class="nav-docs-section"><h3>apis</h3><ul><li><a style="margin-left:0;" class="" href="docs/actionsheetios.html">ActionSheetIOS</a></li><li><a style="margin-left:0;" class="" href="docs/adsupportios.html">AdSupportIOS</a></li><li><a style="margin-left:0;" class="" href="docs/alert.html">Alert</a></li><li><a style="margin-left:0;" class="" href="docs/alertios.html">AlertIOS</a></li><li><a style="margin-left:0;" class="" href="docs/animated.html">Animated</a></li><li><a style="margin-left:0;" class="" href="docs/appregistry.html">AppRegistry</a></li><li><a style="margin-left:0;" class="" href="docs/appstate.html">AppState</a></li><li><a style="margin-left:0;" class="" href="docs/asyncstorage.html">AsyncStorage</a></li><li><a style="margin-left:0;" class="" href="docs/backandroid.html">BackAndroid</a></li><li><a style="margin-left:0;" class="" href="docs/cameraroll.html">CameraRoll</a></li><li><a style="margin-left:0;" class="" href="docs/clipboard.html">Clipboard</a></li><li><a style="margin-left:0;" class="" href="docs/datepickerandroid.html">DatePickerAndroid</a></li><li><a style="margin-left:0;" class="" href="docs/dimensions.html">Dimensions</a></li><li><a style="margin-left:0;" class="" href="docs/easing.html">Easing</a></li><li><a style="margin-left:0;" class="" href="docs/geolocation.html">Geolocation</a></li><li><a style="margin-left:0;" class="" href="docs/imageeditor.html">ImageEditor</a></li><li><a style="margin-left:0;" class="" href="docs/imagepickerios.html">ImagePickerIOS</a></li><li><a style="margin-left:0;" class="" href="docs/imagestore.html">ImageStore</a></li><li><a style="margin-left:0;" class="" href="docs/interactionmanager.html">InteractionManager</a></li><li><a style="margin-left:0;" class="" href="docs/keyboard.html">Keyboard</a></li><li><a style="margin-left:0;" class="" href="docs/layoutanimation.html">LayoutAnimation</a></li><li><a style="margin-left:0;" class="" href="docs/linking.html">Linking</a></li><li><a style="margin-left:0;" class="" href="docs/nativemethodsmixin.html">NativeMethodsMixin</a></li><li><a style="margin-left:0;" class="" href="docs/netinfo.html">NetInfo</a></li><li><a style="margin-left:0;" class="" href="docs/panresponder.html">PanResponder</a></li><li><a style="margin-left:0;" class="" href="docs/permissionsandroid.html">PermissionsAndroid</a></li><li><a style="margin-left:0;" class="" href="docs/pixelratio.html">PixelRatio</a></li><li><a style="margin-left:0;" class="" href="docs/pushnotificationios.html">PushNotificationIOS</a></li><li><a style="margin-left:0;" class="" href="docs/settings.html">Settings</a></li><li><a style="margin-left:0;" class="" href="docs/share.html">Share</a></li><li><a style="margin-left:0;" class="" href="docs/statusbarios.html">StatusBarIOS</a></li><li><a style="margin-left:0;" class="" href="docs/stylesheet.html">StyleSheet</a></li><li><a style="margin-left:0;" class="" href="docs/systrace.html">Systrace</a></li><li><a style="margin-left:0;" class="" href="docs/timepickerandroid.html">TimePickerAndroid</a></li><li><a style="margin-left:0;" class="" href="docs/toastandroid.html">ToastAndroid</a></li><li><a style="margin-left:0;" class="" href="docs/vibration.html">Vibration</a></li><li><a style="margin-left:0;" class="" href="docs/vibrationios.html">VibrationIOS</a></li><li><a style="margin-left:0;" class="" href="docs/layout-props.html">Layout Props</a></li><li><a style="margin-left:0;" class="" href="docs/shadow-props.html">Shadow Props</a></li></ul></div></div></div><div class="inner-content"><a id="content"></a><h1><a class="anchor" name="listview"></a>ListView <a class="hash-link" href="docs/listview.html#listview">#</a></h1><div><div><p>ListView - A core component designed for efficient display of vertically
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scrolling lists of changing data. The minimal API is to create a
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<a href="docs/listviewdatasource.html" target="_blank"><code>ListView.DataSource</code></a>, populate it with a simple
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array of data blobs, and instantiate a <code>ListView</code> component with that data
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source and a <code>renderRow</code> callback which takes a blob from the data array and
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returns a renderable component.</p><p>Minimal example:</p><div class="prism language-javascript">class <span class="token class-name">MyComponent</span> extends <span class="token class-name">Component</span> <span class="token punctuation">{</span>
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<span class="token function">constructor<span class="token punctuation">(</span></span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token function">super<span class="token punctuation">(</span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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const ds <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">ListView<span class="token punctuation">.</span>DataSource</span><span class="token punctuation">(</span><span class="token punctuation">{</span>rowHasChanged<span class="token punctuation">:</span> <span class="token punctuation">(</span>r1<span class="token punctuation">,</span> r2<span class="token punctuation">)</span> <span class="token operator">=</span><span class="token operator">></span> r1 <span class="token operator">!</span><span class="token operator">==</span> r2<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>state <span class="token operator">=</span> <span class="token punctuation">{</span>
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dataSource<span class="token punctuation">:</span> ds<span class="token punctuation">.</span><span class="token function">cloneWithRows<span class="token punctuation">(</span></span><span class="token punctuation">[</span><span class="token string">'row 1'</span><span class="token punctuation">,</span> <span class="token string">'row 2'</span><span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
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<span class="token punctuation">}</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token function">render<span class="token punctuation">(</span></span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">return</span> <span class="token punctuation">(</span>
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<ListView
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dataSource<span class="token operator">=</span><span class="token punctuation">{</span><span class="token keyword">this</span><span class="token punctuation">.</span>state<span class="token punctuation">.</span>dataSource<span class="token punctuation">}</span>
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renderRow<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">(</span>rowData<span class="token punctuation">)</span> <span class="token operator">=</span><span class="token operator">></span> <Text<span class="token operator">></span><span class="token punctuation">{</span>rowData<span class="token punctuation">}</span><<span class="token operator">/</span>Text<span class="token operator">></span><span class="token punctuation">}</span>
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<span class="token operator">/</span><span class="token operator">></span>
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<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span></div><p>ListView also supports more advanced features, including sections with sticky
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section headers, header and footer support, callbacks on reaching the end of
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the available data (<code>onEndReached</code>) and on the set of rows that are visible
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in the device viewport change (<code>onChangeVisibleRows</code>), and several
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performance optimizations.</p><p>There are a few performance operations designed to make ListView scroll
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smoothly while dynamically loading potentially very large (or conceptually
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infinite) data sets:</p><ul><li><p>Only re-render changed rows - the rowHasChanged function provided to the
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data source tells the ListView if it needs to re-render a row because the
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source data has changed - see ListViewDataSource for more details.</p></li><li><p>Rate-limited row rendering - By default, only one row is rendered per
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event-loop (customizable with the <code>pageSize</code> prop). This breaks up the
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work into smaller chunks to reduce the chance of dropping frames while
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rendering rows.</p></li></ul></div><h3><a class="anchor" name="props"></a>Props <a class="hash-link" href="docs/listview.html#props">#</a></h3><div class="props"><div class="prop"><h4 class="propTitle"><a class="anchor" name="scrollview"></a><a href="docs/scrollview.html#props">ScrollView props...</a> <a class="hash-link" href="docs/listview.html#scrollview">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="datasource"></a>dataSource <span class="propType">ListViewDataSource</span> <a class="hash-link" href="docs/listview.html#datasource">#</a></h4><div><p>An instance of <a href="docs/listviewdatasource.html" target="_blank">ListView.DataSource</a> to use</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="enableemptysections"></a>enableEmptySections <span class="propType">bool</span> <a class="hash-link" href="docs/listview.html#enableemptysections">#</a></h4><div><p>Flag indicating whether empty section headers should be rendered. In the future release
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empty section headers will be rendered by default, and the flag will be deprecated.
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If empty sections are not desired to be rendered their indices should be excluded from sectionID object.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="initiallistsize"></a>initialListSize <span class="propType">number</span> <a class="hash-link" href="docs/listview.html#initiallistsize">#</a></h4><div><p>How many rows to render on initial component mount. Use this to make
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it so that the first screen worth of data appears at one time instead of
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over the course of multiple frames.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="onchangevisiblerows"></a>onChangeVisibleRows <span class="propType">function</span> <a class="hash-link" href="docs/listview.html#onchangevisiblerows">#</a></h4><div><p>(visibleRows, changedRows) => void</p><p>Called when the set of visible rows changes. <code>visibleRows</code> maps
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{ sectionID: { rowID: true }} for all the visible rows, and
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<code>changedRows</code> maps { sectionID: { rowID: true | false }} for the rows
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that have changed their visibility, with true indicating visible, and
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false indicating the view has moved out of view.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="onendreached"></a>onEndReached <span class="propType">function</span> <a class="hash-link" href="docs/listview.html#onendreached">#</a></h4><div><p>Called when all rows have been rendered and the list has been scrolled
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to within onEndReachedThreshold of the bottom. The native scroll
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event is provided.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="onendreachedthreshold"></a>onEndReachedThreshold <span class="propType">number</span> <a class="hash-link" href="docs/listview.html#onendreachedthreshold">#</a></h4><div><p>Threshold in pixels (virtual, not physical) for calling onEndReached.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="pagesize"></a>pageSize <span class="propType">number</span> <a class="hash-link" href="docs/listview.html#pagesize">#</a></h4><div><p>Number of rows to render per event loop. Note: if your 'rows' are actually
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cells, i.e. they don't span the full width of your view (as in the
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ListViewGridLayoutExample), you should set the pageSize to be a multiple
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of the number of cells per row, otherwise you're likely to see gaps at
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the edge of the ListView as new pages are loaded.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="removeclippedsubviews"></a>removeClippedSubviews <span class="propType">bool</span> <a class="hash-link" href="docs/listview.html#removeclippedsubviews">#</a></h4><div><p>A performance optimization for improving scroll perf of
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large lists, used in conjunction with overflow: 'hidden' on the row
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containers. This is enabled by default.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="renderfooter"></a>renderFooter <span class="propType">function</span> <a class="hash-link" href="docs/listview.html#renderfooter">#</a></h4><div><p>() => renderable</p><p>The header and footer are always rendered (if these props are provided)
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on every render pass. If they are expensive to re-render, wrap them
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in StaticContainer or other mechanism as appropriate. Footer is always
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at the bottom of the list, and header at the top, on every render pass.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="renderheader"></a>renderHeader <span class="propType">function</span> <a class="hash-link" href="docs/listview.html#renderheader">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="renderrow"></a>renderRow <span class="propType">function</span> <a class="hash-link" href="docs/listview.html#renderrow">#</a></h4><div><p>(rowData, sectionID, rowID, highlightRow) => renderable</p><p>Takes a data entry from the data source and its ids and should return
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a renderable component to be rendered as the row. By default the data
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is exactly what was put into the data source, but it's also possible to
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provide custom extractors. ListView can be notified when a row is
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being highlighted by calling <code>highlightRow(sectionID, rowID)</code>. This
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sets a boolean value of adjacentRowHighlighted in renderSeparator, allowing you
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to control the separators above and below the highlighted row. The highlighted
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||
state of a row can be reset by calling highlightRow(null).</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="renderscrollcomponent"></a>renderScrollComponent <span class="propType">function</span> <a class="hash-link" href="docs/listview.html#renderscrollcomponent">#</a></h4><div><p>(props) => renderable</p><p>A function that returns the scrollable component in which the list rows
|
||
are rendered. Defaults to returning a ScrollView with the given props.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="rendersectionheader"></a>renderSectionHeader <span class="propType">function</span> <a class="hash-link" href="docs/listview.html#rendersectionheader">#</a></h4><div><p>(sectionData, sectionID) => renderable</p><p>If provided, a sticky header is rendered for this section. The sticky
|
||
behavior means that it will scroll with the content at the top of the
|
||
section until it reaches the top of the screen, at which point it will
|
||
stick to the top until it is pushed off the screen by the next section
|
||
header.</p><p>NOTE: On Android, the header is not sticky.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="renderseparator"></a>renderSeparator <span class="propType">function</span> <a class="hash-link" href="docs/listview.html#renderseparator">#</a></h4><div><p>(sectionID, rowID, adjacentRowHighlighted) => renderable</p><p>If provided, a renderable component to be rendered as the separator
|
||
below each row but not the last row if there is a section header below.
|
||
Take a sectionID and rowID of the row above and whether its adjacent row
|
||
is highlighted.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="scrollrenderaheaddistance"></a>scrollRenderAheadDistance <span class="propType">number</span> <a class="hash-link" href="docs/listview.html#scrollrenderaheaddistance">#</a></h4><div><p>How early to start rendering rows before they come on screen, in
|
||
pixels.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="stickyheaderindices"></a><span class="platform">ios</span>stickyHeaderIndices <span class="propType"><span>[number]</span></span> <a class="hash-link" href="docs/listview.html#stickyheaderindices">#</a></h4><div><p>An array of child indices determining which children get docked to the
|
||
top of the screen when scrolling. For example, passing
|
||
<code>stickyHeaderIndices={[0]}</code> will cause the first child to be fixed to the
|
||
top of the scroll view. This property is not supported in conjunction
|
||
with <code>horizontal={true}</code>.</p></div></div></div><span><h3><a class="anchor" name="methods"></a>Methods <a class="hash-link" href="docs/listview.html#methods">#</a></h3><div class="props"><div class="prop"><h4 class="methodTitle"><a class="anchor" name="getmetrics"></a>getMetrics<span class="methodType">(0)</span> <a class="hash-link" href="docs/listview.html#getmetrics">#</a></h4><div><p>Exports some data, e.g. for perf investigations or analytics.</p></div></div><div class="prop"><h4 class="methodTitle"><a class="anchor" name="scrollto"></a>scrollTo<span class="methodType">(...args)</span> <a class="hash-link" href="docs/listview.html#scrollto">#</a></h4><div><p>Scrolls to a given x, y offset, either immediately or with a smooth animation.</p><p>See <code>ScrollView#scrollTo</code>.</p></div></div></div></span></div><p class="edit-page-block">You can <a target="_blank" href="https://github.com/facebook/react-native/blob/master/Libraries/CustomComponents/ListView/ListView.js">edit the content above on GitHub</a> and send us a pull request!</p><div><div><table width="100%"><tbody><tr><td><h3><a class="anchor" name="examples"></a>Examples <a class="hash-link" href="docs/listview.html#examples">#</a></h3></td><td style="text-align:right;"><a target="_blank" href="https://github.com/facebook/react-native/blob/master/Examples/UIExplorer/js/ListViewExample.js">Edit on GitHub</a></td></tr></tbody></table><div class="example-container"><div class="prism language-javascript"><span class="token string">'use strict'</span><span class="token punctuation">;</span>
|
||
|
||
<span class="token keyword">var</span> React <span class="token operator">=</span> <span class="token function">require<span class="token punctuation">(</span></span><span class="token string">'react'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||
<span class="token keyword">var</span> ReactNative <span class="token operator">=</span> <span class="token function">require<span class="token punctuation">(</span></span><span class="token string">'react-native'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||
<span class="token keyword">var</span> <span class="token punctuation">{</span>
|
||
Image<span class="token punctuation">,</span>
|
||
ListView<span class="token punctuation">,</span>
|
||
TouchableHighlight<span class="token punctuation">,</span>
|
||
StyleSheet<span class="token punctuation">,</span>
|
||
RecyclerViewBackedScrollView<span class="token punctuation">,</span>
|
||
Text<span class="token punctuation">,</span>
|
||
View<span class="token punctuation">,</span>
|
||
<span class="token punctuation">}</span> <span class="token operator">=</span> ReactNative<span class="token punctuation">;</span>
|
||
|
||
<span class="token keyword">var</span> UIExplorerPage <span class="token operator">=</span> <span class="token function">require<span class="token punctuation">(</span></span><span class="token string">'./UIExplorerPage'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||
|
||
<span class="token keyword">var</span> ListViewSimpleExample <span class="token operator">=</span> React<span class="token punctuation">.</span><span class="token function">createClass<span class="token punctuation">(</span></span><span class="token punctuation">{</span>
|
||
statics<span class="token punctuation">:</span> <span class="token punctuation">{</span>
|
||
title<span class="token punctuation">:</span> <span class="token string">'<ListView>'</span><span class="token punctuation">,</span>
|
||
description<span class="token punctuation">:</span> <span class="token string">'Performant, scrollable list of data.'</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
|
||
getInitialState<span class="token punctuation">:</span> <span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
||
<span class="token keyword">var</span> ds <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">ListView<span class="token punctuation">.</span>DataSource</span><span class="token punctuation">(</span><span class="token punctuation">{</span>rowHasChanged<span class="token punctuation">:</span> <span class="token punctuation">(</span>r1<span class="token punctuation">,</span> r2<span class="token punctuation">)</span> <span class="token operator">=</span><span class="token operator">></span> r1 <span class="token operator">!</span><span class="token operator">==</span> r2<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||
<span class="token keyword">return</span> <span class="token punctuation">{</span>
|
||
dataSource<span class="token punctuation">:</span> ds<span class="token punctuation">.</span><span class="token function">cloneWithRows<span class="token punctuation">(</span></span><span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">_genRows<span class="token punctuation">(</span></span><span class="token punctuation">{</span><span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">;</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
|
||
_pressData<span class="token punctuation">:</span> <span class="token punctuation">(</span><span class="token punctuation">{</span><span class="token punctuation">}</span><span class="token punctuation">:</span> <span class="token punctuation">{</span><span class="token punctuation">[</span>key<span class="token punctuation">:</span> number<span class="token punctuation">]</span><span class="token punctuation">:</span> boolean<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
|
||
|
||
componentWillMount<span class="token punctuation">:</span> <span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
||
<span class="token keyword">this</span><span class="token punctuation">.</span>_pressData <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token punctuation">}</span><span class="token punctuation">;</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
|
||
render<span class="token punctuation">:</span> <span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
||
<span class="token keyword">return</span> <span class="token punctuation">(</span>
|
||
<UIExplorerPage
|
||
title<span class="token operator">=</span><span class="token punctuation">{</span><span class="token keyword">this</span><span class="token punctuation">.</span>props<span class="token punctuation">.</span>navigator <span class="token operator">?</span> <span class="token keyword">null</span> <span class="token punctuation">:</span> <span class="token string">'<ListView>'</span><span class="token punctuation">}</span>
|
||
noSpacer<span class="token operator">=</span><span class="token punctuation">{</span><span class="token boolean">true</span><span class="token punctuation">}</span>
|
||
noScroll<span class="token operator">=</span><span class="token punctuation">{</span><span class="token boolean">true</span><span class="token punctuation">}</span><span class="token operator">></span>
|
||
<ListView
|
||
dataSource<span class="token operator">=</span><span class="token punctuation">{</span><span class="token keyword">this</span><span class="token punctuation">.</span>state<span class="token punctuation">.</span>dataSource<span class="token punctuation">}</span>
|
||
renderRow<span class="token operator">=</span><span class="token punctuation">{</span><span class="token keyword">this</span><span class="token punctuation">.</span>_renderRow<span class="token punctuation">}</span>
|
||
renderScrollComponent<span class="token operator">=</span><span class="token punctuation">{</span>props <span class="token operator">=</span><span class="token operator">></span> <RecyclerViewBackedScrollView <span class="token punctuation">{</span><span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span>props<span class="token punctuation">}</span> <span class="token operator">/</span><span class="token operator">></span><span class="token punctuation">}</span>
|
||
renderSeparator<span class="token operator">=</span><span class="token punctuation">{</span><span class="token keyword">this</span><span class="token punctuation">.</span>_renderSeparator<span class="token punctuation">}</span>
|
||
<span class="token operator">/</span><span class="token operator">></span>
|
||
<<span class="token operator">/</span>UIExplorerPage<span class="token operator">></span>
|
||
<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
|
||
_renderRow<span class="token punctuation">:</span> <span class="token keyword">function</span><span class="token punctuation">(</span>rowData<span class="token punctuation">:</span> string<span class="token punctuation">,</span> sectionID<span class="token punctuation">:</span> number<span class="token punctuation">,</span> rowID<span class="token punctuation">:</span> number<span class="token punctuation">,</span> highlightRow<span class="token punctuation">:</span> <span class="token punctuation">(</span>sectionID<span class="token punctuation">:</span> number<span class="token punctuation">,</span> rowID<span class="token punctuation">:</span> number<span class="token punctuation">)</span> <span class="token operator">=</span><span class="token operator">></span> void<span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
||
<span class="token keyword">var</span> rowHash <span class="token operator">=</span> Math<span class="token punctuation">.</span><span class="token function">abs<span class="token punctuation">(</span></span><span class="token function">hashCode<span class="token punctuation">(</span></span>rowData<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||
<span class="token keyword">var</span> imgSource <span class="token operator">=</span> THUMB_URLS<span class="token punctuation">[</span>rowHash <span class="token operator">%</span> THUMB_URLS<span class="token punctuation">.</span>length<span class="token punctuation">]</span><span class="token punctuation">;</span>
|
||
<span class="token keyword">return</span> <span class="token punctuation">(</span>
|
||
<TouchableHighlight onPress<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=</span><span class="token operator">></span> <span class="token punctuation">{</span>
|
||
<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">_pressRow<span class="token punctuation">(</span></span>rowID<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||
<span class="token function">highlightRow<span class="token punctuation">(</span></span>sectionID<span class="token punctuation">,</span> rowID<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">></span>
|
||
<View<span class="token operator">></span>
|
||
<View style<span class="token operator">=</span><span class="token punctuation">{</span>styles<span class="token punctuation">.</span>row<span class="token punctuation">}</span><span class="token operator">></span>
|
||
<Image style<span class="token operator">=</span><span class="token punctuation">{</span>styles<span class="token punctuation">.</span>thumb<span class="token punctuation">}</span> source<span class="token operator">=</span><span class="token punctuation">{</span>imgSource<span class="token punctuation">}</span> <span class="token operator">/</span><span class="token operator">></span>
|
||
<Text style<span class="token operator">=</span><span class="token punctuation">{</span>styles<span class="token punctuation">.</span>text<span class="token punctuation">}</span><span class="token operator">></span>
|
||
<span class="token punctuation">{</span>rowData <span class="token operator">+</span> <span class="token string">' - '</span> <span class="token operator">+</span> LOREM_IPSUM<span class="token punctuation">.</span><span class="token function">substr<span class="token punctuation">(</span></span><span class="token number">0</span><span class="token punctuation">,</span> rowHash <span class="token operator">%</span> <span class="token number">301</span> <span class="token operator">+</span> <span class="token number">10</span><span class="token punctuation">)</span><span class="token punctuation">}</span>
|
||
<<span class="token operator">/</span>Text<span class="token operator">></span>
|
||
<<span class="token operator">/</span>View<span class="token operator">></span>
|
||
<<span class="token operator">/</span>View<span class="token operator">></span>
|
||
<<span class="token operator">/</span>TouchableHighlight<span class="token operator">></span>
|
||
<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
|
||
_genRows<span class="token punctuation">:</span> <span class="token keyword">function</span><span class="token punctuation">(</span>pressData<span class="token punctuation">:</span> <span class="token punctuation">{</span><span class="token punctuation">[</span>key<span class="token punctuation">:</span> number<span class="token punctuation">]</span><span class="token punctuation">:</span> boolean<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">:</span> Array<string<span class="token operator">></span> <span class="token punctuation">{</span>
|
||
<span class="token keyword">var</span> dataBlob <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token punctuation">;</span>
|
||
<span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token keyword">var</span> ii <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span> ii < <span class="token number">100</span><span class="token punctuation">;</span> ii<span class="token operator">++</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
||
<span class="token keyword">var</span> pressedText <span class="token operator">=</span> pressData<span class="token punctuation">[</span>ii<span class="token punctuation">]</span> <span class="token operator">?</span> <span class="token string">' (pressed)'</span> <span class="token punctuation">:</span> <span class="token string">''</span><span class="token punctuation">;</span>
|
||
dataBlob<span class="token punctuation">.</span><span class="token function">push<span class="token punctuation">(</span></span><span class="token string">'Row '</span> <span class="token operator">+</span> ii <span class="token operator">+</span> pressedText<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||
<span class="token punctuation">}</span>
|
||
<span class="token keyword">return</span> dataBlob<span class="token punctuation">;</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
|
||
_pressRow<span class="token punctuation">:</span> <span class="token keyword">function</span><span class="token punctuation">(</span>rowID<span class="token punctuation">:</span> number<span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
||
<span class="token keyword">this</span><span class="token punctuation">.</span>_pressData<span class="token punctuation">[</span>rowID<span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token operator">!</span><span class="token keyword">this</span><span class="token punctuation">.</span>_pressData<span class="token punctuation">[</span>rowID<span class="token punctuation">]</span><span class="token punctuation">;</span>
|
||
<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">setState<span class="token punctuation">(</span></span><span class="token punctuation">{</span>dataSource<span class="token punctuation">:</span> <span class="token keyword">this</span><span class="token punctuation">.</span>state<span class="token punctuation">.</span>dataSource<span class="token punctuation">.</span><span class="token function">cloneWithRows<span class="token punctuation">(</span></span>
|
||
<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">_genRows<span class="token punctuation">(</span></span><span class="token keyword">this</span><span class="token punctuation">.</span>_pressData<span class="token punctuation">)</span>
|
||
<span class="token punctuation">)</span><span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
|
||
_renderSeparator<span class="token punctuation">:</span> <span class="token keyword">function</span><span class="token punctuation">(</span>sectionID<span class="token punctuation">:</span> number<span class="token punctuation">,</span> rowID<span class="token punctuation">:</span> number<span class="token punctuation">,</span> adjacentRowHighlighted<span class="token punctuation">:</span> bool<span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
||
<span class="token keyword">return</span> <span class="token punctuation">(</span>
|
||
<View
|
||
key<span class="token operator">=</span><span class="token punctuation">{</span>`$<span class="token punctuation">{</span>sectionID<span class="token punctuation">}</span><span class="token operator">-</span>$<span class="token punctuation">{</span>rowID<span class="token punctuation">}</span>`<span class="token punctuation">}</span>
|
||
style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>
|
||
height<span class="token punctuation">:</span> adjacentRowHighlighted <span class="token operator">?</span> <span class="token number">4</span> <span class="token punctuation">:</span> <span class="token number">1</span><span class="token punctuation">,</span>
|
||
backgroundColor<span class="token punctuation">:</span> adjacentRowHighlighted <span class="token operator">?</span> <span class="token string">'#3B5998'</span> <span class="token punctuation">:</span> <span class="token string">'#CCCCCC'</span><span class="token punctuation">,</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">}</span>
|
||
<span class="token operator">/</span><span class="token operator">></span>
|
||
<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||
<span class="token punctuation">}</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||
|
||
<span class="token keyword">var</span> THUMB_URLS <span class="token operator">=</span> <span class="token punctuation">[</span>
|
||
<span class="token function">require<span class="token punctuation">(</span></span><span class="token string">'./Thumbnails/like.png'</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
|
||
<span class="token function">require<span class="token punctuation">(</span></span><span class="token string">'./Thumbnails/dislike.png'</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
|
||
<span class="token function">require<span class="token punctuation">(</span></span><span class="token string">'./Thumbnails/call.png'</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
|
||
<span class="token function">require<span class="token punctuation">(</span></span><span class="token string">'./Thumbnails/fist.png'</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
|
||
<span class="token function">require<span class="token punctuation">(</span></span><span class="token string">'./Thumbnails/bandaged.png'</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
|
||
<span class="token function">require<span class="token punctuation">(</span></span><span class="token string">'./Thumbnails/flowers.png'</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
|
||
<span class="token function">require<span class="token punctuation">(</span></span><span class="token string">'./Thumbnails/heart.png'</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
|
||
<span class="token function">require<span class="token punctuation">(</span></span><span class="token string">'./Thumbnails/liking.png'</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
|
||
<span class="token function">require<span class="token punctuation">(</span></span><span class="token string">'./Thumbnails/party.png'</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
|
||
<span class="token function">require<span class="token punctuation">(</span></span><span class="token string">'./Thumbnails/poke.png'</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
|
||
<span class="token function">require<span class="token punctuation">(</span></span><span class="token string">'./Thumbnails/superlike.png'</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
|
||
<span class="token function">require<span class="token punctuation">(</span></span><span class="token string">'./Thumbnails/victory.png'</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
|
||
<span class="token punctuation">]</span><span class="token punctuation">;</span>
|
||
<span class="token keyword">var</span> LOREM_IPSUM <span class="token operator">=</span> <span class="token string">'Lorem ipsum dolor sit amet, ius ad pertinax oportere accommodare, an vix civibus corrumpit referrentur. Te nam case ludus inciderint, te mea facilisi adipiscing. Sea id integre luptatum. In tota sale consequuntur nec. Erat ocurreret mei ei. Eu paulo sapientem vulputate est, vel an accusam intellegam interesset. Nam eu stet pericula reprimique, ea vim illud modus, putant invidunt reprehendunt ne qui.'</span><span class="token punctuation">;</span>
|
||
|
||
<span class="token comment" spellcheck="true">/* eslint no-bitwise: 0 */</span>
|
||
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