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<p><code><strong>trimRight()</strong> </code>方法从一个字符串的右端移除空白字符。</p>
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<p><iframe class="interactive interactive-js" frameborder="0" height="250" src="https://interactive-examples.mdn.mozilla.net/pages/js/string-trimend.html" width="100%"></iframe></p>
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<h2 id="Syntax" name="Syntax">语法</h2>
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<pre class="syntaxbox"><code><var>str</var>.trimEnd();
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<var>str</var>.trimRight();</code></pre>
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<pre><code class="language-javascript"><code><var>str</var>.trimEnd();
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<var>str</var>.trimRight();</code></code></pre>
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<h3 id="返回值">返回值</h3>
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<p>一个新字符串,表示从其(右)端剥去空白的调用字符串。</p>
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<h2 id="Description" name="Description">描述</h2>
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<p><code>trimEnd()</code> / <code>trimRight()</code>方法移除原字符串右端的连续空白符并返回,<code>trimEnd()</code> / <code>trimRight()</code>方法并不会直接修改原字符串本身。</p>
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<h3 id="别名">别名</h3>
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<p>为了与 <a href="Reference/Global_Objects/String/padEnd" title="padEnd() 方法会用一个字符串填充当前字符串(如果需要的话则重复填充),返回填充后达到指定长度的字符串。从当前字符串的末尾(右侧)开始填充。"><code>String.prototype.padEnd</code></a> 等函数保持一致,标准方法名称为<code>trimEnd</code>。 但是,出于Web兼容性原因,<code>trimRight</code>仍然是<code>trimEnd</code>的别名。 在某些引擎中,这意味着:</p>
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<pre class="brush: js"><code>String.prototype.trimRight.name === "trimEnd";</code>
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</pre>
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<pre><code class="language-javascript"><code>String.prototype.trimRight.name === "trimEnd";</code>
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</code></pre>
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<h2 id="Examples" name="Examples">示例</h2>
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<h3 id="使用trimEnd()">使用<code>trimEnd()</code></h3>
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<p>下面的例子输出了小写的字符串" foo":</p>
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<pre class="brush:js;highlight:[5]">var str = " foo ";
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<pre><code class="language-js;highlight:[5]">var str = " foo ";
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alert(str.length); // 8
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str = str.trimRight();
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alert(str.length); // 6
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document.write( str );
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</pre>
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</code></pre>
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<h2 id="Specifications">Specifications</h2>
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<table class="standard-table">
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<thead>
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