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语法高亮,滚动条美化,设置页面调整
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<h2 id="Summary" name="Summary">概述</h2>
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<p><code><strong>delete()</strong></code> 方法可以从一个 <code>WeakMap</code> 对象中删除指定的元素。</p>
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<h2 id="Syntax" name="Syntax">语法</h2>
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<pre class="syntaxbox"><code><em>wm</em>.delete(key);</code></pre>
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<pre><code class="language-javascript"><code><em>wm</em>.delete(key);</code></code></pre>
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<h3 id="Parameters参数">Parameters参数</h3>
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<dl>
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<dt>key</dt>
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<h3 id="返回值">返回值</h3>
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<p>如果成功删除,返回 <code>true</code>,否则返回 <code>false</code>。</p>
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<h2 id="Examples" name="Examples">示例</h2>
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<pre class="brush: js;">var wm = new WeakMap();
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<pre><code class="language-js;">var wm = new WeakMap();
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wm.set(window, "foo");
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wm.delete(window); // 返回 true,表示删除成功。
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wm.has(window); // 返回 false,因为 window 对象已经被删除了。
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</pre>
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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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