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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 class="syntaxbox"><var>Symbol</var>.toSource()
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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()</pre>
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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 class="brush:js">"function Symbol() {
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<pre><code class="language-js">"function Symbol() {
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[native code]
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}"</pre>
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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 class="brush: js">"Symbol()"</pre>
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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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