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<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Handling Text Input · React Native</title><meta name="viewport" content="width=device-width"/><meta name="generator" content="Docusaurus"/><meta name="description" content="[`TextInput`](/react-native/docs/textinput#content) is a basic component that allows the user to enter text. It has an `onChangeText` prop that takes a function to be called every time the text changed, and an `onSubmitEditing` prop that takes a function to be called when the text is submitted."/><meta name="docsearch:version" content="0.57"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="Handling Text Input · React Native"/><meta property="og:type" content="website"/><meta property="og:url" content="https://facebook.github.io/react-native/index.html"/><meta property="og:description" content="[`TextInput`](/react-native/docs/textinput#content) is a basic component that allows the user to enter text. It has an `onChangeText` prop that takes a function to be called every time the text changed, and an `onSubmitEditing` prop that takes a function to be called when the text is submitted."/><meta name="twitter:card" content="summary"/><link rel="shortcut icon" href="/react-native/img/favicon.png"/><link rel="stylesheet" href="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.css"/><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/solarized-dark.min.css"/><link rel="alternate" type="application/atom+xml" href="https://facebook.github.io/react-native/blog/atom.xml" title="React Native Blog ATOM Feed"/><link rel="alternate" type="application/rss+xml" href="https://facebook.github.io/react-native/blog/feed.xml" title="React Native Blog RSS Feed"/><script>
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</script></nav></div><div class="container mainContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/facebook/react-native-website/blob/master/docs/handling-text-input.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 class="postHeaderTitle">Handling Text Input</h1></header><article><div><span><p><a href="/react-native/docs/textinput#content"><code>TextInput</code></a> is a basic component that allows the user to enter text. It has an <code>onChangeText</code> prop that takes a function to be called every time the text changed, and an <code>onSubmitEditing</code> prop that takes a function to be called when the text is submitted.</p>
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<p>For example, let's say that as the user types, you're translating their words into a different language. In this new language, every single word is written the same way: 🍕. So the sentence "Hello there Bob" would be translated as "🍕🍕🍕".</p>
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<div class="web-player"><pre><code class="hljs css javascript"><span class="hljs-keyword">import</span> React, { Component } <span class="hljs-keyword">from</span> <span class="hljs-string">'react'</span>;
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<span class="hljs-keyword">import</span> { AppRegistry, Text, TextInput, View } <span class="hljs-keyword">from</span> <span class="hljs-string">'react-native'</span>;
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<span class="hljs-keyword">export</span> <span class="hljs-keyword">default</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">PizzaTranslator</span> <span class="hljs-keyword">extends</span> <span class="hljs-title">Component</span> </span>{
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<span class="hljs-keyword">constructor</span>(props) {
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<span class="hljs-keyword">super</span>(props);
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<span class="hljs-keyword">this</span>.state = {<span class="hljs-attr">text</span>: <span class="hljs-string">''</span>};
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}
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render() {
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<span class="hljs-keyword">return</span> (
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<span class="xml"><span class="hljs-tag"><<span class="hljs-name">View</span> <span class="hljs-attr">style</span>=<span class="hljs-string">{{padding:</span> <span class="hljs-attr">10</span>}}></span>
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<span class="hljs-tag"><<span class="hljs-name">TextInput</span>
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<span class="hljs-attr">style</span>=<span class="hljs-string">{{height:</span> <span class="hljs-attr">40</span>}}
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<span class="hljs-attr">placeholder</span>=<span class="hljs-string">"Type here to translate!"</span>
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<span class="hljs-attr">onChangeText</span>=<span class="hljs-string">{(text)</span> =></span> this.setState({text})}
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/>
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<span class="hljs-tag"><<span class="hljs-name">Text</span> <span class="hljs-attr">style</span>=<span class="hljs-string">{{padding:</span> <span class="hljs-attr">10</span>, <span class="hljs-attr">fontSize:</span> <span class="hljs-attr">42</span>}}></span>
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{this.state.text.split(' ').map((word) => word && '🍕').join(' ')}
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<span class="hljs-tag"></<span class="hljs-name">Text</span>></span>
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<span class="hljs-tag"></<span class="hljs-name">View</span>></span>
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);
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}
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}
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// skip this line if using Create React Native App
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AppRegistry.registerComponent('AwesomeProject', () => PizzaTranslator);
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</span></code></pre><iframe style="margin-top: 4" width="100%" height="420" data-src="//cdn.rawgit.com/dabbott/react-native-web-player/gh-v1.10.0/index.html#code=import%20React%2C%20%7B%20Component%20%7D%20from%20'react'%3B%0Aimport%20%7B%20AppRegistry%2C%20Text%2C%20TextInput%2C%20View%20%7D%20from%20'react-native'%3B%0A%0Aexport%20default%20class%20PizzaTranslator%20extends%20Component%20%7B%0A%20%20constructor(props)%20%7B%0A%20%20%20%20super(props)%3B%0A%20%20%20%20this.state%20%3D%20%7Btext%3A%20''%7D%3B%0A%20%20%7D%0A%0A%20%20render()%20%7B%0A%20%20%20%20return%20(%0A%20%20%20%20%20%20%3CView%20style%3D%7B%7Bpadding%3A%2010%7D%7D%3E%0A%20%20%20%20%20%20%20%20%3CTextInput%0A%20%20%20%20%20%20%20%20%20%20style%3D%7B%7Bheight%3A%2040%7D%7D%0A%20%20%20%20%20%20%20%20%20%20placeholder%3D%22Type%20here%20to%20translate!%22%0A%20%20%20%20%20%20%20%20%20%20onChangeText%3D%7B(text)%20%3D%3E%20this.setState(%7Btext%7D)%7D%0A%20%20%20%20%20%20%20%20%2F%3E%0A%20%20%20%20%20%20%20%20%3CText%20style%3D%7B%7Bpadding%3A%2010%2C%20fontSize%3A%2042%7D%7D%3E%0A%20%20%20%20%20%20%20%20%20%20%7Bthis.state.text.split('%20').map((word)%20%3D%3E%20word%20%26%26%20'%F0%9F%8D%95').join('%20')%7D%0A%20%20%20%20%20%20%20%20%3C%2FText%3E%0A%20%20%20%20%20%20%3C%2FView%3E%0A%20%20%20%20)%3B%0A%20%20%7D%0A%7D%0A%0A%2F%2F%20skip%20this%20line%20if%20using%20Create%20React%20Native%20App%0AAppRegistry.registerComponent('AwesomeProject'%2C%20()%20%3D%3E%20PizzaTranslator)%3B%0A" frame-border="0"></iframe></div>
|
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<p>In this example, we store <code>text</code> in the state, because it changes over time.</p>
|
||
<p>There are a lot more things you might want to do with a text input. For example, you could validate the text inside while the user types. For more detailed examples, see the <a href="https://reactjs.org/docs/forms.html#controlled-components">React docs on controlled components</a>, or the <a href="/react-native/docs/textinput">reference docs for TextInput</a>.</p>
|
||
<p>Text input is one of the ways the user interacts with the app. Next, let's look at another type of input and <a href="/react-native/docs/handling-touches">learn how to handle touches</a>.</p>
|
||
</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/react-native/docs/flexbox">← Layout with Flexbox</a><a class="docs-next button" href="/react-native/docs/handling-touches">Handling Touches →</a></div></div></div></div><footer class="nav-footer" id="footer"><section class="sitemap"><a href="/react-native/" class="nav-home"><img src="/react-native/img/header_logo.png" alt="React Native" width="66" height="58"/></a><div><h5><a href="/react-native/docs/getting-started.html">Docs</a></h5><a href="/react-native/docs/getting-started.html">Getting Started</a><a href="/react-native/docs/tutorial.html">Tutorial</a><a href="/react-native/docs/components-and-apis.html">Components and APIs</a><a href="/react-native/docs/more-resources.html">More Resources</a></div><div><h5><a href="/react-native/help.html">Community</a></h5><a href="/react-native/showcase.html">Who's using React Native?</a><a href="http://stackoverflow.com/questions/tagged/react-native" target="_blank">Stack Overflow</a><a href="https://discuss.reactjs.org" target="_blank">Discussion Forum</a><a href="https://discord.gg/0ZcbPKXt5bZjGY5n">Reactiflux Chat</a></div><div><h5>More</h5><a href="/react-native/blog">Blog</a><a href="https://twitter.com/reactnative" target="_blank">Twitter</a><a href="https://github.com/facebook/react-native" target="_blank">GitHub</a><a href="http://reactjs.org" target="_blank">React</a></div></section><a href="https://code.facebook.com/projects/" target="_blank" class="fbOpenSource"><img src="/react-native/img/oss_logo.png" alt="Facebook Open Source" width="170" height="45"/></a><section class="copyright">Copyright © 2018 Facebook Inc.</section></footer></div><script type="text/javascript" src="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.js"></script><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'));
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