mirror of
https://github.com/facebook/react.git
synced 2025-11-01 09:12:30 +00:00
Paul O’Shannessy
590 lines
31 KiB
HTML
590 lines
31 KiB
HTML
<!DOCTYPE html>
|
|
<!--[if IE]><![endif]-->
|
|
<html>
|
|
<head>
|
|
<meta charset="utf-8">
|
|
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
|
|
<title>Props 전달 | React</title>
|
|
<meta name="viewport" content="width=device-width">
|
|
<meta property="og:title" content="Props 전달 | React">
|
|
<meta property="og:type" content="website">
|
|
<meta property="og:url" content="https://facebook.github.io/react/docs/transferring-props-ko-KR.html">
|
|
<meta property="og:image" content="https://facebook.github.io/react/img/logo_og.png">
|
|
<meta property="og:description" content="A JavaScript library for building user interfaces">
|
|
<meta property="fb:app_id" content="623268441017527">
|
|
|
|
<link rel="shortcut icon" href="/react/favicon.ico">
|
|
<link rel="alternate" type="application/rss+xml" title="React" href="https://facebook.github.io/react/feed.xml">
|
|
|
|
<link rel="stylesheet" href="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.css" />
|
|
<link rel="stylesheet" href="/react/css/syntax.css">
|
|
<link rel="stylesheet" href="/react/css/codemirror.css">
|
|
<link rel="stylesheet" href="/react/css/react.css">
|
|
|
|
<script src="//use.typekit.net/vqa1hcx.js"></script>
|
|
<script>try{Typekit.load();}catch(e){}</script>
|
|
|
|
<!--[if lte IE 8]>
|
|
<script src="/react/js/html5shiv.min.js"></script>
|
|
<script src="/react/js/es5-shim.min.js"></script>
|
|
<script src="/react/js/es5-sham.min.js"></script>
|
|
<![endif]-->
|
|
<script type="text/javascript" src="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.js"></script>
|
|
<script src="/react/js/codemirror.js"></script>
|
|
<script src="/react/js/javascript.js"></script>
|
|
<script src="/react/js/react.js"></script>
|
|
<script src="/react/js/react-dom.js"></script>
|
|
<script src="/react/js/babel-browser.min.js"></script>
|
|
<script src="/react/js/live_editor.js"></script>
|
|
</head>
|
|
<body>
|
|
|
|
<div class="container">
|
|
|
|
<div class="nav-main">
|
|
<div class="wrap">
|
|
<a class="nav-home" href="/react/index.html">
|
|
<img class="nav-logo" src="/react/img/logo.svg" width="36" height="36">
|
|
React
|
|
</a>
|
|
<ul class="nav-site nav-site-internal">
|
|
<li><a href="/react/docs/getting-started.html" class="active">Docs</a></li>
|
|
<li><a href="/react/support.html">Support</a></li>
|
|
<li><a href="/react/downloads.html">Download</a></li>
|
|
<li><a href="/react/blog/">Blog</a></li>
|
|
<li>
|
|
<input id="algolia-doc-search" type="text" placeholder="Search docs..." />
|
|
</li>
|
|
</ul>
|
|
|
|
<ul class="nav-site nav-site-external">
|
|
<li><a href="https://github.com/facebook/react">GitHub</a></li>
|
|
<li><a href="https://facebook.github.io/react-native/">React Native</a></li>
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
|
|
|
|
|
|
<section class="content wrap documentationContent">
|
|
<div class="nav-docs">
|
|
<!-- Docs Nav -->
|
|
|
|
<div class="nav-docs-section">
|
|
<h3>Quick Start</h3>
|
|
<ul>
|
|
|
|
<li>
|
|
<a href="/react/docs/getting-started.html">Getting Started</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/tutorial.html">Tutorial</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/thinking-in-react.html">Thinking in React</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</div>
|
|
|
|
<div class="nav-docs-section">
|
|
<h3>Community Resources</h3>
|
|
<ul>
|
|
|
|
<li>
|
|
<a href="/react/docs/conferences.html">Conferences</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/videos.html">Videos</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="https://github.com/facebook/react/wiki/Complementary-Tools" class="external">Complementary Tools</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="https://github.com/facebook/react/wiki/Examples" class="external">Examples</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</div>
|
|
|
|
<div class="nav-docs-section">
|
|
<h3>Guides</h3>
|
|
<ul>
|
|
|
|
<li>
|
|
<a href="/react/docs/why-react.html">Why React?</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/displaying-data.html">Displaying Data</a>
|
|
|
|
<ul>
|
|
|
|
<li>
|
|
<a href="/react/docs/jsx-in-depth.html">JSX in Depth</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/jsx-spread.html">JSX Spread Attributes</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/jsx-gotchas.html">JSX Gotchas</a>
|
|
</li>
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/interactivity-and-dynamic-uis.html">Interactivity and Dynamic UIs</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/multiple-components.html">Multiple Components</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/reusable-components.html">Reusable Components</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/transferring-props.html">Transferring Props</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/forms.html">Forms</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/working-with-the-browser.html">Working With the Browser</a>
|
|
|
|
<ul>
|
|
|
|
<li>
|
|
<a href="/react/docs/more-about-refs.html">Refs to Components</a>
|
|
</li>
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/tooling-integration.html">Tooling Integration</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/addons.html">Add-Ons</a>
|
|
|
|
<ul>
|
|
|
|
<li>
|
|
<a href="/react/docs/animation.html">Animation</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/two-way-binding-helpers.html">Two-Way Binding Helpers</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/test-utils.html">Test Utilities</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/clone-with-props.html">Cloning Elements</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/create-fragment.html">Keyed Fragments</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/update.html">Immutability Helpers</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/pure-render-mixin.html">PureRenderMixin</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/perf.html">Performance Tools</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/shallow-compare.html">Shallow Compare</a>
|
|
</li>
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/advanced-performance.html">Advanced Performance</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/context.html">Context</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</div>
|
|
|
|
<div class="nav-docs-section">
|
|
<h3>Reference</h3>
|
|
<ul>
|
|
|
|
<li>
|
|
<a href="/react/docs/top-level-api.html">Top-Level API</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/component-api.html">Component API</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/component-specs.html">Component Specs and Lifecycle</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/tags-and-attributes.html">Supported Tags and Attributes</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/events.html">Event System</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/dom-differences.html">DOM Differences</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/special-non-dom-attributes.html">Special Non-DOM Attributes</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/reconciliation.html">Reconciliation</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/webcomponents.html">Web Components</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/docs/glossary.html">React (Virtual) DOM Terminology</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</div>
|
|
|
|
<div class="nav-docs-section">
|
|
<h3>Flux</h3>
|
|
<ul>
|
|
|
|
<li>
|
|
<a href="https://facebook.github.io/flux/docs/overview.html" class="external">Flux Overview</a>
|
|
|
|
</li>
|
|
|
|
<li>
|
|
<a href="https://facebook.github.io/flux/docs/todo-list.html" class="external">Flux TodoMVC Tutorial</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</div>
|
|
|
|
|
|
<!-- Tips Nav -->
|
|
|
|
<div class="nav-docs-section">
|
|
<h3>Tips</h3>
|
|
<ul>
|
|
|
|
<li>
|
|
<a href="/react/tips/introduction.html">Introduction</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/tips/inline-styles.html">Inline Styles</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/tips/if-else-in-JSX.html">If-Else in JSX</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/tips/self-closing-tag.html">Self-Closing Tag</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/tips/maximum-number-of-jsx-root-nodes.html">Maximum Number of JSX Root Nodes</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/tips/style-props-value-px.html">Shorthand for Specifying Pixel Values in style props</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/tips/children-props-type.html">Type of the Children props</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/tips/controlled-input-null-value.html">Value of null for Controlled Input</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/tips/componentWillReceiveProps-not-triggered-after-mounting.html">componentWillReceiveProps Not Triggered After Mounting</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/tips/props-in-getInitialState-as-anti-pattern.html">Props in getInitialState Is an Anti-Pattern</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/tips/dom-event-listeners.html">DOM Event Listeners in a Component</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/tips/initial-ajax.html">Load Initial Data via AJAX</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/tips/false-in-jsx.html">False in JSX</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/tips/communicate-between-components.html">Communicate Between Components</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/tips/expose-component-functions.html">Expose Component Functions</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/tips/children-undefined.html">this.props.children undefined</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/tips/use-react-with-other-libraries.html">Use React with Other Libraries</a>
|
|
</li>
|
|
|
|
<li>
|
|
<a href="/react/tips/dangerously-set-inner-html.html">Dangerously Set innerHTML</a>
|
|
</li>
|
|
|
|
</ul>
|
|
</div>
|
|
|
|
</div>
|
|
|
|
|
|
<div class="inner-content">
|
|
<h1>
|
|
Props 전달
|
|
<a class="edit-page-link" href="https://github.com/facebook/react/tree/master/docs/docs/06-transferring-props.ko-KR.md" target="_blank">Edit on GitHub</a>
|
|
</h1>
|
|
<div class="subHeader"></div>
|
|
|
|
<p>React에서는 컴포넌트를 감싸서 추상화하는 것이 일반적인 패턴입니다. 외부 컴포넌트에서는 간단한 프로퍼티만을 노출하여 복잡한 세부 구현을 감출 수 있습니다.</p>
|
|
|
|
<p><a href="/react/docs/jsx-spread-ko-KR.html">JSX 스프레드 어트리뷰트</a>를 통해 props에 추가적인 값을 병합할 수 있습니다.</p>
|
|
<div class="highlight"><pre><code class="language-javascript" data-lang="javascript"><span class="o"><</span><span class="nx">Component</span> <span class="p">{...</span><span class="k">this</span><span class="p">.</span><span class="nx">props</span><span class="p">}</span> <span class="nx">more</span><span class="o">=</span><span class="s2">"values"</span> <span class="o">/></span>
|
|
</code></pre></div>
|
|
<p>만약 JSX를 사용하지 않는다면 ES6의 <code>Object.assign</code>나 Underscore의 <code>_.extend</code> 같은 객체 헬퍼를 사용할 수 있습니다:</p>
|
|
<div class="highlight"><pre><code class="language-javascript" data-lang="javascript"><span class="nx">React</span><span class="p">.</span><span class="nx">createElement</span><span class="p">(</span><span class="nx">Component</span><span class="p">,</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">assign</span><span class="p">({},</span> <span class="k">this</span><span class="p">.</span><span class="nx">props</span><span class="p">,</span> <span class="p">{</span> <span class="nx">more</span><span class="o">:</span> <span class="s1">'values'</span> <span class="p">}));</span>
|
|
</code></pre></div>
|
|
<p>이 튜토리얼의 나머지 부분은 모범 답안을 소개할 것입니다. JSX와 실험적인 ES7 구문을 사용합니다.</p>
|
|
<h2><a class="anchor" name="-"></a>수동적인 전달 <a class="hash-link" href="#-">#</a></h2>
|
|
<p>대부분의 경우 명시적으로 프로퍼티를 아래로 전달해야 합니다. 이는 동작을 확신하는 내부 API의 일부만 공개하도록 합니다.</p>
|
|
<div class="highlight"><pre><code class="language-javascript" data-lang="javascript"><span class="kd">function</span> <span class="nx">FancyCheckbox</span><span class="p">(</span><span class="nx">props</span><span class="p">)</span> <span class="p">{</span>
|
|
<span class="kd">var</span> <span class="nx">fancyClass</span> <span class="o">=</span> <span class="nx">props</span><span class="p">.</span><span class="nx">checked</span> <span class="o">?</span> <span class="s1">'FancyChecked'</span> <span class="o">:</span> <span class="s1">'FancyUnchecked'</span><span class="p">;</span>
|
|
<span class="k">return</span> <span class="p">(</span>
|
|
<span class="o"><</span><span class="nx">div</span> <span class="nx">className</span><span class="o">=</span><span class="p">{</span><span class="nx">fancyClass</span><span class="p">}</span> <span class="nx">onClick</span><span class="o">=</span><span class="p">{</span><span class="nx">props</span><span class="p">.</span><span class="nx">onClick</span><span class="p">}</span><span class="o">></span>
|
|
<span class="p">{</span><span class="nx">props</span><span class="p">.</span><span class="nx">children</span><span class="p">}</span>
|
|
<span class="o"><</span><span class="err">/div></span>
|
|
<span class="p">);</span>
|
|
<span class="p">}</span>
|
|
<span class="nx">ReactDOM</span><span class="p">.</span><span class="nx">render</span><span class="p">(</span>
|
|
<span class="o"><</span><span class="nx">FancyCheckbox</span> <span class="nx">checked</span><span class="o">=</span><span class="p">{</span><span class="kc">true</span><span class="p">}</span> <span class="nx">onClick</span><span class="o">=</span><span class="p">{</span><span class="nx">console</span><span class="p">.</span><span class="nx">log</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">console</span><span class="p">)}</span><span class="o">></span>
|
|
<span class="err">세상아</span> <span class="err">안녕</span><span class="o">!</span>
|
|
<span class="o"><</span><span class="err">/FancyCheckbox>,</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>하지만 <code>name</code>이나 <code>title</code>, <code>onMouseOver</code> 같은 prop들이 더 추가된다면 어떨까요?</p>
|
|
<h2><a class="anchor" name="jsx-...--"></a>JSX에서 <code>...</code>를 사용해 전달하기 <a class="hash-link" href="#jsx-...--">#</a></h2>
|
|
<blockquote>
|
|
<p>주의:</p>
|
|
|
|
<p><code>...</code> 구문은 객체 잔여 스프레드 제안의 일부입니다. 이 제안은 표준화 과정에 있습니다. 더 자세한 내용은 밑의 <a href="/react/docs/transferring-props.html#rest-and-spread-properties-...">잔여 프로퍼티와 스프레드 프로퍼티 ...</a> 부분을 참고하세요.</p>
|
|
</blockquote>
|
|
|
|
<p>때로는 모든 프로퍼티를 일일이 전달 하는것은 지루하고 덧없는 작업입니다. 이 경우 <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Destructuring_assignment">구조 해체 할당(destructuring assignment)</a>을 다른 프로퍼티를 함께 사용해 미상의 프로퍼티를 추출할 수 있습니다.</p>
|
|
|
|
<p>소비할 프로퍼티들을 나열하고, 그 뒤에 <code>...other</code>를 넣습니다.</p>
|
|
<div class="highlight"><pre><code class="language-javascript" data-lang="javascript"><span class="kd">var</span> <span class="p">{</span> <span class="nx">checked</span><span class="p">,</span> <span class="p">...</span><span class="nx">other</span> <span class="p">}</span> <span class="o">=</span> <span class="nx">props</span><span class="p">;</span>
|
|
</code></pre></div>
|
|
<p>이는 지금 소비한 props를 <em>제외한</em> 나머지를 아래로 전달합니다.</p>
|
|
<div class="highlight"><pre><code class="language-javascript" data-lang="javascript"><span class="kd">function</span> <span class="nx">FancyCheckbox</span><span class="p">(</span><span class="nx">props</span><span class="p">)</span> <span class="p">{</span>
|
|
<span class="kd">var</span> <span class="p">{</span> <span class="nx">checked</span><span class="p">,</span> <span class="p">...</span><span class="nx">other</span> <span class="p">}</span> <span class="o">=</span> <span class="nx">props</span><span class="p">;</span>
|
|
<span class="kd">var</span> <span class="nx">fancyClass</span> <span class="o">=</span> <span class="nx">checked</span> <span class="o">?</span> <span class="s1">'FancyChecked'</span> <span class="o">:</span> <span class="s1">'FancyUnchecked'</span><span class="p">;</span>
|
|
<span class="c1">// `other`에는 { onClick: console.log }가 포함되지만 checked 프로퍼티는 제외됩니다</span>
|
|
<span class="k">return</span> <span class="p">(</span>
|
|
<span class="o"><</span><span class="nx">div</span> <span class="p">{...</span><span class="nx">other</span><span class="p">}</span> <span class="nx">className</span><span class="o">=</span><span class="p">{</span><span class="nx">fancyClass</span><span class="p">}</span> <span class="o">/></span>
|
|
<span class="p">);</span>
|
|
<span class="p">}</span>
|
|
<span class="nx">ReactDOM</span><span class="p">.</span><span class="nx">render</span><span class="p">(</span>
|
|
<span class="o"><</span><span class="nx">FancyCheckbox</span> <span class="nx">checked</span><span class="o">=</span><span class="p">{</span><span class="kc">true</span><span class="p">}</span> <span class="nx">onClick</span><span class="o">=</span><span class="p">{</span><span class="nx">console</span><span class="p">.</span><span class="nx">log</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">console</span><span class="p">)}</span><span class="o">></span>
|
|
<span class="err">세상아</span> <span class="err">안녕</span><span class="o">!</span>
|
|
<span class="o"><</span><span class="err">/FancyCheckbox>,</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>
|
|
<blockquote>
|
|
<p>주의:</p>
|
|
|
|
<p>위의 예제에서는 <code>checked</code> prop 또한 마찬가지로 유효한 DOM 어트리뷰트입니다. 이런 식으로 구조의 해체(destructuring)를 하지 않으면 의도하지 않게 함께 전달될 수 있습니다.</p>
|
|
</blockquote>
|
|
|
|
<p>미상의 <code>other</code> props을 전달할 때는 항상 구조 해체 패턴을 사용하세요.</p>
|
|
<div class="highlight"><pre><code class="language-javascript" data-lang="javascript"><span class="kd">function</span> <span class="nx">FancyCheckbox</span><span class="p">(</span><span class="nx">props</span><span class="p">)</span> <span class="p">{</span>
|
|
<span class="kd">var</span> <span class="nx">fancyClass</span> <span class="o">=</span> <span class="nx">props</span><span class="p">.</span><span class="nx">checked</span> <span class="o">?</span> <span class="s1">'FancyChecked'</span> <span class="o">:</span> <span class="s1">'FancyUnchecked'</span><span class="p">;</span>
|
|
<span class="c1">// 반례: `checked` 또한 내부 컴포넌트로 전달될 것입니다</span>
|
|
<span class="k">return</span> <span class="p">(</span>
|
|
<span class="o"><</span><span class="nx">div</span> <span class="p">{...</span><span class="nx">props</span><span class="p">}</span> <span class="nx">className</span><span class="o">=</span><span class="p">{</span><span class="nx">fancyClass</span><span class="p">}</span> <span class="o">/></span>
|
|
<span class="p">);</span>
|
|
<span class="p">}</span>
|
|
</code></pre></div><h2><a class="anchor" name="-prop--"></a>같은 Prop을 소비하고 전달하기 <a class="hash-link" href="#-prop--">#</a></h2>
|
|
<p>컴포넌트가 프로퍼티를 사용하지만 계속 넘기길 원한다면, <code>checked={checked}</code>처럼 명시적으로 다시 넘길 수 있습니다. 리팩토링과 린트(lint)하기가 더 쉬우므로 이 방식이 <code>this.props</code> 객체 전부를 넘기는 것보다 낫습니다.</p>
|
|
<div class="highlight"><pre><code class="language-javascript" data-lang="javascript"><span class="kd">function</span> <span class="nx">FancyCheckbox</span><span class="p">(</span><span class="nx">props</span><span class="p">)</span> <span class="p">{</span>
|
|
<span class="kd">var</span> <span class="p">{</span> <span class="nx">checked</span><span class="p">,</span> <span class="nx">title</span><span class="p">,</span> <span class="p">...</span><span class="nx">other</span> <span class="p">}</span> <span class="o">=</span> <span class="nx">props</span><span class="p">;</span>
|
|
<span class="kd">var</span> <span class="nx">fancyClass</span> <span class="o">=</span> <span class="nx">checked</span> <span class="o">?</span> <span class="s1">'FancyChecked'</span> <span class="o">:</span> <span class="s1">'FancyUnchecked'</span><span class="p">;</span>
|
|
<span class="kd">var</span> <span class="nx">fancyTitle</span> <span class="o">=</span> <span class="nx">checked</span> <span class="o">?</span> <span class="s1">'X '</span> <span class="o">+</span> <span class="nx">title</span> <span class="o">:</span> <span class="s1">'O '</span> <span class="o">+</span> <span class="nx">title</span><span class="p">;</span>
|
|
<span class="k">return</span> <span class="p">(</span>
|
|
<span class="o"><</span><span class="nx">label</span><span class="o">></span>
|
|
<span class="o"><</span><span class="nx">input</span> <span class="p">{...</span><span class="nx">other</span><span class="p">}</span>
|
|
<span class="nx">checked</span><span class="o">=</span><span class="p">{</span><span class="nx">checked</span><span class="p">}</span>
|
|
<span class="nx">className</span><span class="o">=</span><span class="p">{</span><span class="nx">fancyClass</span><span class="p">}</span>
|
|
<span class="nx">type</span><span class="o">=</span><span class="s2">"checkbox"</span>
|
|
<span class="o">/></span>
|
|
<span class="p">{</span><span class="nx">fancyTitle</span><span class="p">}</span>
|
|
<span class="o"><</span><span class="err">/label></span>
|
|
<span class="p">);</span>
|
|
<span class="p">}</span>
|
|
</code></pre></div>
|
|
<blockquote>
|
|
<p>주의:</p>
|
|
|
|
<p>순서는 중요합니다. <code>{...other}</code>를 JSX props 이전에 넣는 것으로 컴포넌트의 사용자가 확실히 그것들을 오버라이드 할 수 없게 합니다. 위의 예제에서는 input이 <code>"checkbox"</code> 타입인 것을 보장합니다.</p>
|
|
</blockquote>
|
|
|
|
<p><a name="rest-and-spread-properties-..."></a></p>
|
|
<h2><a class="anchor" name="----..."></a>잔여 프로퍼티와 스프레드 프로퍼티 <code>...</code> <a class="hash-link" href="#----...">#</a></h2>
|
|
<p>잔여(Rest, <code>...</code>) 프로퍼티는 객체에서 소비되지 않은 나머지 프로퍼티를 추출해 새로운 객체로 만들 수 있게 해 줍니다. 구조 해체 패턴에서 열거된 다른 프로퍼티들은 모두 제외됩니다.</p>
|
|
|
|
<p>이 제안은 2 단계에 돌입해 이제 바벨에서 기본값으로 활성화되어있습니다. 바벨의 이전 버전은 <code>babel --optional es7.objectRestSpread</code>로 명시적으로 활성화 할 필요가 있을 수도 있습니다.</p>
|
|
<div class="highlight"><pre><code class="language-javascript" data-lang="javascript"><span class="kd">var</span> <span class="p">{</span> <span class="nx">x</span><span class="p">,</span> <span class="nx">y</span><span class="p">,</span> <span class="p">...</span><span class="nx">z</span> <span class="p">}</span> <span class="o">=</span> <span class="p">{</span> <span class="nx">x</span><span class="o">:</span> <span class="mi">1</span><span class="p">,</span> <span class="nx">y</span><span class="o">:</span> <span class="mi">2</span><span class="p">,</span> <span class="nx">a</span><span class="o">:</span> <span class="mi">3</span><span class="p">,</span> <span class="nx">b</span><span class="o">:</span> <span class="mi">4</span> <span class="p">};</span>
|
|
<span class="nx">x</span><span class="p">;</span> <span class="c1">// 1</span>
|
|
<span class="nx">y</span><span class="p">;</span> <span class="c1">// 2</span>
|
|
<span class="nx">z</span><span class="p">;</span> <span class="c1">// { a: 3, b: 4 }</span>
|
|
</code></pre></div>
|
|
<blockquote>
|
|
<p>주의:</p>
|
|
|
|
<p>실험적인 ES7 구문을 활성화하려면 <a href="https://www.npmjs.com/package/react-tools">JSX 커맨드라인 도구</a>를 <code>--harmony</code> 플래그와 함께 사용하세요.</p>
|
|
</blockquote>
|
|
<h2><a class="anchor" name="underscore--"></a>Underscore로 전달 다루기 <a class="hash-link" href="#underscore--">#</a></h2>
|
|
<p>JSX를 사용하지 않는다면 라이브러리를 사용해 같은 패턴을 쓸 수 있습니다. Underscore에서는 <code>_.omit</code>을 사용해 특정 프로퍼티를 제외하거나 <code>_.extend</code>를 사용해 새로운 객체로 프로퍼티를 복사할 수 있습니다.</p>
|
|
<div class="highlight"><pre><code class="language-javascript" data-lang="javascript"><span class="kd">function</span> <span class="nx">FancyCheckbox</span><span class="p">(</span><span class="nx">props</span><span class="p">)</span> <span class="p">{</span>
|
|
<span class="kd">var</span> <span class="nx">checked</span> <span class="o">=</span> <span class="nx">props</span><span class="p">.</span><span class="nx">checked</span><span class="p">;</span>
|
|
<span class="kd">var</span> <span class="nx">other</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">omit</span><span class="p">(</span><span class="nx">props</span><span class="p">,</span> <span class="s1">'checked'</span><span class="p">);</span>
|
|
<span class="kd">var</span> <span class="nx">fancyClass</span> <span class="o">=</span> <span class="nx">checked</span> <span class="o">?</span> <span class="s1">'FancyChecked'</span> <span class="o">:</span> <span class="s1">'FancyUnchecked'</span><span class="p">;</span>
|
|
<span class="k">return</span> <span class="p">(</span>
|
|
<span class="nx">React</span><span class="p">.</span><span class="nx">DOM</span><span class="p">.</span><span class="nx">div</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">extend</span><span class="p">({},</span> <span class="nx">other</span><span class="p">,</span> <span class="p">{</span> <span class="nx">className</span><span class="o">:</span> <span class="nx">fancyClass</span> <span class="p">}))</span>
|
|
<span class="p">);</span>
|
|
<span class="p">}</span>
|
|
</code></pre></div>
|
|
|
|
<div class="docs-prevnext">
|
|
|
|
<a class="docs-prev" href="/react/docs/reusable-components-ko-KR.html">← Prev</a>
|
|
|
|
|
|
<a class="docs-next" href="/react/docs/forms-ko-KR.html">Next →</a>
|
|
|
|
</div>
|
|
</div>
|
|
</section>
|
|
|
|
|
|
<footer class="wrap">
|
|
<div class="left">
|
|
A Facebook & Instagram collaboration.<br>
|
|
<a href="/react/acknowledgements.html">Acknowledgements</a>
|
|
</div>
|
|
<div class="right">
|
|
© 2013–2016 Facebook Inc.<br>
|
|
Documentation licensed under <a href="https://creativecommons.org/licenses/by/4.0/">CC BY 4.0</a>.
|
|
</div>
|
|
</footer>
|
|
</div>
|
|
<div id="fb-root"></div>
|
|
|
|
<script>
|
|
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
|
|
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
|
|
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
|
|
})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
|
|
ga('create', 'UA-41298772-1', 'facebook.github.io');
|
|
ga('send', 'pageview');
|
|
|
|
!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="https://platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");
|
|
|
|
(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/all.js#xfbml=1&appId=623268441017527";
|
|
fjs.parentNode.insertBefore(js, fjs);
|
|
}(document, 'script', 'facebook-jssdk'));
|
|
|
|
docsearch({
|
|
apiKey: '36221914cce388c46d0420343e0bb32e',
|
|
indexName: 'react',
|
|
inputSelector: '#algolia-doc-search'
|
|
});
|
|
</script>
|
|
</body>
|
|
</html>
|