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105 lines
4.6 KiB
HTML
105 lines
4.6 KiB
HTML
<article id="wikiArticle">
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<div> <div class="blockIndicator obsolete obsoleteHeader"><p><strong><span class="icon-only-inline" title="This is an obsolete API and is no longer guaranteed to work."><i class="icon-trash"> </i></span> 已废弃</strong><br/>This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.</p></div></div>
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<div><strong><code>Reflect.enumerate()</code></strong>静态方法通常返回目标对象自身和继承的可迭代属性的一个迭代器，在ECMAScript 2016中已被移除，在各浏览器中已被废弃。</div>
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<h2 id="语法">语法</h2>
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<pre><code class="language-javascript">Reflect.enumerate(target)
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</code></pre>
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<h3 id="参数">参数</h3>
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<dl>
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<dt><code>target</code></dt>
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<dd>获取属性的目标对象。</dd>
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</dl>
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<h3 id="返回值">返回值</h3>
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<p>目标对象自身和继承的可迭代属性的一个迭代器。</p>
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<h3 id="Exceptions">Exceptions</h3>
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<p> <a href="Reference/Global_Objects/TypeError" title="TypeError（类型错误） 对象用来表示值的类型非预期类型时发生的错误。"><code>TypeError</code></a>, 如果目标不是一个 <a href="Reference/Global_Objects/Object" title="Object 构造函数创建一个对象包装器。"><code>Object</code></a>.</p>
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<h2 id="描述">描述</h2>
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<p><code>Reflect.enumerate()</code>方法返回目标对象自身和继承的可迭代属性的一个迭代器。</p>
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<h2 id="案例">案例</h2>
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<h3 id="使用_Reflect.enumerate()">使用 <code>Reflect.enumerate()</code></h3>
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<pre><code class="language-javascript">var obj = { x: 1, y: 2 };
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for (var name of Reflect.enumerate(obj)) {
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console.log(name);
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}
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// logs "x" and "y"
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</code></pre>
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<h2 id="规范">规范</h2>
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<table class="standard-table">
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<tbody>
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<tr>
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<th scope="col">Specification</th>
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<th scope="col">Status</th>
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<th scope="col">Comment</th>
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</tr>
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<tr>
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<td><a class="external" href="https://www.ecma-international.org/ecma-262/6.0/#sec-reflect.enumerate" hreflang="en" lang="en" rel="noopener">ECMAScript 2015 (6th Edition, ECMA-262)<br/><small lang="zh-CN">Reflect.enumerate</small></a></td>
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<td><span class="spec-Standard">Standard</span></td>
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<td>初始定义。ECMAScript 2016中已移除。</td>
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</tr>
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</tbody>
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</table>
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<h2 id="浏览器兼容性">浏览器兼容性</h2>
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<p></p><div class="blockIndicator warning"><strong><a class="external" href="https://github.com/mdn/browser-compat-data" rel="noopener">We're converting our compatibility data into a machine-readable JSON format</a></strong>.
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This compatibility table still uses the old format,
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because we haven't yet converted the data it contains.
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<strong><a class="new" href="/zh-CN/docs/MDN/Contribute/Structures/Compatibility_tables" rel="nofollow">Find out how you can help!</a></strong></div>
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<div class="htab">
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<a id="AutoCompatibilityTable" name="AutoCompatibilityTable"></a>
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<ul>
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<li class="selected"><a>Desktop</a></li>
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<li><a>Mobile</a></li>
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</ul>
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</div><p></p>
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<div id="compat-desktop">
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<table class="compat-table">
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<tbody>
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<tr>
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<th>Feature</th>
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<th>Chrome</th>
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<th>Firefox (Gecko)</th>
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<th>Internet Explorer</th>
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<th>Opera</th>
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<th>Safari</th>
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</tr>
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<tr>
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<td>Basic support</td>
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<td><span style="color: #f00;">未实现</span></td>
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<td><span style="color: #f00;">未实现</span></td>
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<td><span style="color: #f00;">未实现</span></td>
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<td><span style="color: #f00;">未实现</span></td>
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<td><span style="color: #f00;">未实现</span></td>
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</tr>
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</tbody>
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</table>
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</div>
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<div id="compat-mobile">
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<table class="compat-table">
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<tbody>
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<tr>
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<th>Feature</th>
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<th>Android</th>
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<th>Chrome for Android</th>
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<th>Firefox Mobile (Gecko)</th>
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<th>IE Mobile</th>
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<th>Opera Mobile</th>
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<th>Safari Mobile</th>
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</tr>
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<tr>
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<td>Basic support</td>
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<td><span style="color: #f00;">未实现</span></td>
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<td><span style="color: #f00;">未实现</span></td>
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<td><span style="color: #f00;">未实现</span></td>
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<td><span style="color: #f00;">未实现</span></td>
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<td><span style="color: #f00;">未实现</span></td>
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<td><span style="color: #f00;">未实现</span></td>
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</tr>
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</tbody>
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</table>
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</div>
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<h2 id="参照">参照</h2>
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<ul>
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<li><a href="Reference/Global_Objects/Reflect" title="Reflect 是一个内置的对象，它提供拦截 JavaScript 操作的方法。这些方法与处理器对象的方法相同。Reflect不是一个函数对象，因此它是不可构造的。"><code>Reflect</code></a></li>
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<li><a href="/en-US/docs/Web/JavaScript/Reference/Statements/for...in">for...in</a></li>
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</ul>
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</article> |