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<a href="/react/docs/update.html">Immutability Helpers</a>
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<a href="/react/docs/pure-render-mixin.html">PureRenderMixin</a>
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<h3>Reference</h3>
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<ul>
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<a href="/react/docs/top-level-api.html">Top-Level API</a>
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<a href="/react/docs/component-api.html">Component API</a>
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<a href="/react/docs/tags-and-attributes.html">Supported Tags and Attributes</a>
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<a href="/react/docs/events.html">Event System</a>
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<a href="/react/docs/dom-differences.html">DOM Differences</a>
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<li>
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<a href="/react/docs/special-non-dom-attributes.html">Special Non-DOM Attributes</a>
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<li>
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<a href="/react/docs/reconciliation.html">Reconciliation</a>
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<li>
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<a href="/react/docs/glossary.html">React (Virtual) DOM Terminology</a>
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</li>
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</ul>
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</div>
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<div class="nav-docs-section">
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<h3>Flux</h3>
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<ul>
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<li>
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<a href="https://facebook.github.io/flux/docs/overview.html">Flux Overview</a>
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</li>
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<li>
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<a href="https://facebook.github.io/flux/docs/todo-list.html">Flux TodoMVC Tutorial</a>
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</li>
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</ul>
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</div>
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<!-- Tips Nav -->
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<div class="nav-docs-section">
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<h3>Tips</h3>
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<ul>
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<li>
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<a href="/react/tips/introduction.html">Introduction</a>
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</li>
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<li>
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<a href="/react/tips/inline-styles.html">Inline Styles</a>
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</li>
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<li>
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<a href="/react/tips/if-else-in-JSX.html">If-Else in JSX</a>
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</li>
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<li>
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<a href="/react/tips/self-closing-tag.html">Self-Closing Tag</a>
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</li>
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<li>
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<a href="/react/tips/maximum-number-of-jsx-root-nodes.html">Maximum Number of JSX Root Nodes</a>
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</li>
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<li>
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<a href="/react/tips/style-props-value-px.html">Shorthand for Specifying Pixel Values in style props</a>
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</li>
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<li>
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<a href="/react/tips/children-props-type.html">Type of the Children props</a>
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</li>
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<li>
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<a href="/react/tips/controlled-input-null-value.html">Value of null for Controlled Input</a>
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</li>
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<li>
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<a href="/react/tips/componentWillReceiveProps-not-triggered-after-mounting.html">componentWillReceiveProps Not Triggered After Mounting</a>
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</li>
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<li>
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<a href="/react/tips/props-in-getInitialState-as-anti-pattern.html">Props in getInitialState Is an Anti-Pattern</a>
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</li>
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<li>
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<a href="/react/tips/dom-event-listeners.html">DOM Event Listeners in a Component</a>
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</li>
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<li>
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<a href="/react/tips/initial-ajax.html">Load Initial Data via AJAX</a>
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</li>
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<li>
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<a href="/react/tips/false-in-jsx.html">False in JSX</a>
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</li>
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<li>
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<a href="/react/tips/communicate-between-components.html">Communicate Between Components</a>
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</li>
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<li>
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<a href="/react/tips/expose-component-functions.html">Expose Component Functions</a>
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</li>
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<li>
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<a href="/react/tips/children-undefined.html">this.props.children undefined</a>
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</li>
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<li>
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<a href="/react/tips/use-react-with-other-libraries.html">Use React with Other Libraries</a>
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</li>
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<li>
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<a href="/react/tips/dangerously-set-inner-html.html">Dangerously Set innerHTML</a>
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</li>
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</ul>
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</div>
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</div>
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<div class="inner-content">
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<h1>
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Getting Started
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<a class="edit-page-link" href="https://github.com/facebook/react/tree/master/docs/docs/getting-started.md" target="_blank">Edit on GitHub</a>
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</h1>
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<div class="subHeader"></div>
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<h2><a class="anchor" name="jsfiddle"></a>JSFiddle <a class="hash-link" href="#jsfiddle">#</a></h2>
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<p>The easiest way to start hacking on React is using the following JSFiddle Hello World examples:</p>
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<ul>
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<li><strong><a href="https://jsfiddle.net/reactjs/69z2wepo/">React JSFiddle</a></strong></li>
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<li><a href="https://jsfiddle.net/reactjs/5vjqabv3/">React JSFiddle without JSX</a></li>
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</ul>
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<h2><a class="anchor" name="using-react-from-npm"></a>Using React from npm <a class="hash-link" href="#using-react-from-npm">#</a></h2>
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<p>We recommend using React with a CommonJS module system like <a href="http://browserify.org/">browserify</a> or <a href="https://webpack.github.io/">webpack</a>. Use the <a href="https://www.npmjs.com/package/react"><code>react</code></a> and <a href="https://www.npmjs.com/package/react-dom"><code>react-dom</code></a> npm packages.</p>
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<div class="highlight"><pre><code class="language-js" data-lang="js"><span class="c1">// main.js</span>
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<span class="kd">var</span> <span class="nx">React</span> <span class="o">=</span> <span class="nx">require</span><span class="p">(</span><span class="s1">'react'</span><span class="p">);</span>
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<span class="kd">var</span> <span class="nx">ReactDOM</span> <span class="o">=</span> <span class="nx">require</span><span class="p">(</span><span class="s1">'react-dom'</span><span class="p">);</span>
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<span class="nx">ReactDOM</span><span class="p">.</span><span class="nx">render</span><span class="p">(</span>
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<span class="o"><</span><span class="nx">h1</span><span class="o">></span><span class="nx">Hello</span><span class="p">,</span> <span class="nx">world</span><span class="o">!<</span><span class="err">/h1>,</span>
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<span class="nb">document</span><span class="p">.</span><span class="nx">getElementById</span><span class="p">(</span><span class="s1">'example'</span><span class="p">)</span>
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<span class="p">);</span>
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</code></pre></div>
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<p>To install React DOM and build your bundle after installing browserify:</p>
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<div class="highlight"><pre><code class="language-sh" data-lang="sh"><span class="nv">$ </span>npm install --save react react-dom babelify babel-preset-react
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<span class="nv">$ </span>browserify -t <span class="o">[</span> babelify --presets <span class="o">[</span> react <span class="o">]</span> <span class="o">]</span> main.js -o bundle.js
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</code></pre></div>
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<blockquote>
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<p>Note:</p>
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<p>If you are using ES2015, you will want to also use the <code>babel-preset-es2015</code> package.</p>
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</blockquote>
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<h2><a class="anchor" name="quick-start-without-npm"></a>Quick Start Without npm <a class="hash-link" href="#quick-start-without-npm">#</a></h2>
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<p>If you're not ready to use npm yet, you can download the starter kit which includes prebuilt copies of React and React DOM.</p>
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<div class="buttons-unit downloads">
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<a href="/react/downloads/react-0.14.2.zip" class="button">
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Download Starter Kit 0.14.2
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</a>
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</div>
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<p>In the root directory of the starter kit, create a <code>helloworld.html</code> with the following contents.</p>
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<div class="highlight"><pre><code class="language-html" data-lang="html"><span class="cp"><!DOCTYPE html></span>
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<span class="nt"><html></span>
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<span class="nt"><head></span>
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<span class="nt"><meta</span> <span class="na">charset=</span><span class="s">"UTF-8"</span> <span class="nt">/></span>
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<span class="nt"><title></span>Hello React!<span class="nt"></title></span>
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<span class="nt"><script </span><span class="na">src=</span><span class="s">"build/react.js"</span><span class="nt">></script></span>
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<span class="nt"><script </span><span class="na">src=</span><span class="s">"build/react-dom.js"</span><span class="nt">></script></span>
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<span class="nt"><script </span><span class="na">src=</span><span class="s">"https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.23/browser.min.js"</span><span class="nt">></script></span>
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<span class="nt"></head></span>
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<span class="nt"><body></span>
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<span class="nt"><div</span> <span class="na">id=</span><span class="s">"example"</span><span class="nt">></div></span>
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<span class="nt"><script </span><span class="na">type=</span><span class="s">"text/babel"</span><span class="nt">></span>
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<span class="nx">ReactDOM</span><span class="p">.</span><span class="nx">render</span><span class="p">(</span>
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<span class="o"><</span><span class="nx">h1</span><span class="o">></span><span class="nx">Hello</span><span class="p">,</span> <span class="nx">world</span><span class="o">!<</span><span class="err">/h1>,</span>
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<span class="nb">document</span><span class="p">.</span><span class="nx">getElementById</span><span class="p">(</span><span class="s1">'example'</span><span class="p">)</span>
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<span class="p">);</span>
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<span class="nt"></script></span>
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<span class="nt"></body></span>
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<span class="nt"></html></span>
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</code></pre></div>
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<p>The XML syntax inside of JavaScript is called JSX; check out the <a href="/react/docs/jsx-in-depth.html">JSX syntax</a> to learn more about it. In order to translate it to vanilla JavaScript we use <code><script type="text/babel"></code> and include Babel to actually perform the transformation in the browser.</p>
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<h3><a class="anchor" name="separate-file"></a>Separate File <a class="hash-link" href="#separate-file">#</a></h3>
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<p>Your React JSX code can live in a separate file. Create the following <code>src/helloworld.js</code>.</p>
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<div class="highlight"><pre><code class="language-javascript" data-lang="javascript"><span class="nx">ReactDOM</span><span class="p">.</span><span class="nx">render</span><span class="p">(</span>
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|
<span class="o"><</span><span class="nx">h1</span><span class="o">></span><span class="nx">Hello</span><span class="p">,</span> <span class="nx">world</span><span class="o">!<</span><span class="err">/h1>,</span>
|
|
<span class="nb">document</span><span class="p">.</span><span class="nx">getElementById</span><span class="p">(</span><span class="s1">'example'</span><span class="p">)</span>
|
|
<span class="p">);</span>
|
|
</code></pre></div>
|
|
<p>Then reference it from <code>helloworld.html</code>:</p>
|
|
<div class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt"><script </span><span class="na">type=</span><span class="s">"text/babel"</span> <span class="na">src=</span><span class="s">"src/helloworld.js"</span><span class="nt">></script></span>
|
|
</code></pre></div>
|
|
<p>Note that some browsers (Chrome, e.g.) will fail to load the file unless it's served via HTTP.</p>
|
|
<h3><a class="anchor" name="offline-transform"></a>Offline Transform <a class="hash-link" href="#offline-transform">#</a></h3>
|
|
<p>First install the <a href="http://babeljs.io/">Babel</a> command-line tools (requires <a href="https://www.npmjs.com/">npm</a>):</p>
|
|
<div class="highlight"><pre><code class="language-text" data-lang="text">npm install --global babel-cli
|
|
npm install babel-preset-react
|
|
</code></pre></div>
|
|
<p>Then, translate your <code>src/helloworld.js</code> file to plain JavaScript:</p>
|
|
<div class="highlight"><pre><code class="language-text" data-lang="text">babel --presets react src --watch --out-dir build
|
|
</code></pre></div>
|
|
<blockquote>
|
|
<p>Note:</p>
|
|
|
|
<p>If you are using ES2015, you will want to also use the <code>babel-preset-es2015</code> package.</p>
|
|
</blockquote>
|
|
|
|
<p>The file <code>build/helloworld.js</code> is autogenerated whenever you make a change. Read the <a href="http://babeljs.io/docs/usage/cli/">Babel CLI documentation</a> for more advanced usage.</p>
|
|
<div class="highlight"><pre><code class="language-javascript" data-lang="javascript"><span class="nx">ReactDOM</span><span class="p">.</span><span class="nx">render</span><span class="p">(</span>
|
|
<span class="hll"> <span class="nx">React</span><span class="p">.</span><span class="nx">createElement</span><span class="p">(</span><span class="s1">'h1'</span><span class="p">,</span> <span class="kc">null</span><span class="p">,</span> <span class="s1">'Hello, world!'</span><span class="p">),</span>
|
|
</span> <span class="nb">document</span><span class="p">.</span><span class="nx">getElementById</span><span class="p">(</span><span class="s1">'example'</span><span class="p">)</span>
|
|
<span class="p">);</span>
|
|
</code></pre></div>
|
|
<p>Update your HTML file as below:</p>
|
|
<div class="highlight"><pre><code class="language-html" data-lang="html"><span class="cp"><!DOCTYPE html></span>
|
|
<span class="nt"><html></span>
|
|
<span class="nt"><head></span>
|
|
<span class="nt"><meta</span> <span class="na">charset=</span><span class="s">"UTF-8"</span> <span class="nt">/></span>
|
|
<span class="nt"><title></span>Hello React!<span class="nt"></title></span>
|
|
<span class="nt"><script </span><span class="na">src=</span><span class="s">"build/react.js"</span><span class="nt">></script></span>
|
|
<span class="nt"><script </span><span class="na">src=</span><span class="s">"build/react-dom.js"</span><span class="nt">></script></span>
|
|
<span class="hll"> <span class="c"><!-- No need for Babel! --></span>
|
|
</span> <span class="nt"></head></span>
|
|
<span class="nt"><body></span>
|
|
<span class="nt"><div</span> <span class="na">id=</span><span class="s">"example"</span><span class="nt">></div></span>
|
|
<span class="hll"> <span class="nt"><script </span><span class="na">src=</span><span class="s">"build/helloworld.js"</span><span class="nt">></script></span>
|
|
</span> <span class="nt"></body></span>
|
|
<span class="nt"></html></span>
|
|
</code></pre></div><h2><a class="anchor" name="next-steps"></a>Next Steps <a class="hash-link" href="#next-steps">#</a></h2>
|
|
<p>Check out <a href="/react/docs/tutorial.html">the tutorial</a> and the other examples in the starter kit's <code>examples</code> directory to learn more.</p>
|
|
|
|
<p>We also have a wiki where the community contributes with <a href="https://github.com/facebook/react/wiki/Complementary-Tools">workflows, UI-components, routing, data management etc.</a></p>
|
|
|
|
<p>Good luck, and welcome!</p>
|
|
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<div class="docs-prevnext">
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<a class="docs-next" href="/react/docs/tutorial.html">Next →</a>
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A Facebook & Instagram collaboration.<br>
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<a href="/react/acknowledgements.html">Acknowledgements</a>
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</div>
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<div class="right">
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© 2013–2015 Facebook Inc.<br>
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Documentation licensed under <a href="https://creativecommons.org/licenses/by/4.0/">CC BY 4.0</a>.
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