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https://github.com/fofolee/uTools-Manuals.git
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85 lines
3.4 KiB
HTML
85 lines
3.4 KiB
HTML
<article id="wikiArticle">
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<div> <div class="blockIndicator nonStandard nonStandardHeader">
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<p><strong><span class="icon-only-inline" title="This API has not been standardized."><i class="icon-warning-sign"> </i></span> 非标准</strong><br/>
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该特性是非标准的，请尽量不要在生产环境中使用它！</p>
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</div></div>
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<p><code><strong>toSource()</strong></code> 方法返回代表该对象源码的字符串。</p>
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<p>该方法通常由JavaScript内部调用。</p>
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<h2 id="Syntax">Syntax</h2>
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<pre><code class="language-javascript"><var>Symbol</var>.toSource()
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var sym = Symbol()
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sym.toSource()</code></pre>
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<h2 id="Description">Description</h2>
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<p><code>toSource</code>方法返回以下值：</p>
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<p>对于内建<code>Symbol对象</code>, <code>toSource</code> 返回以下字符串，表明源代码不可见：</p>
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<pre><code class="language-js">"function Symbol() {
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[native code]
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}"</code></pre>
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<p>对于<code>Symbol实例</code>, <code>toSource</code> 返回代表源码的字符串。</p>
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<pre><code class="language-javascript">"Symbol()"</code></pre>
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<h2 id="Specifications">Specifications</h2>
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<p>还未成为任何标准的一部分</p>
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<h2 id="Browser_compatibility">Browser compatibility</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><a href="/en-US/Firefox/Releases/36" title="Released on 2015-02-24.">36.0</a> (36.0)</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>36.0 (36.0)</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="See_also">See also</h2>
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<ul>
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<li><a href="Reference/Global_Objects/Object/toSource" title="toSource()方法返回一个表示对象源代码的字符串。"><code>Object.prototype.toSource()</code></a> <span class="icon-only-inline" title="This API has not been standardized."><i class="icon-warning-sign"> </i></span></li>
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</ul>
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</article> |