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130 lines
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130 lines
13 KiB
HTML
<article id="wikiArticle">
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<div></div>
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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><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><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><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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</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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<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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</thead>
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<tbody>
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<tr>
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<td><code><a class="external" href="https://github.com/tc39/proposal-string-left-right-trim/#stringprototypetrimstart--stringprototypetrimend" rel="noopener">String.prototype.{trimStart,trimEnd}</a></code> proposal</td>
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<td>Stage 3</td>
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<td> </td>
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</tr>
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</tbody>
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</table>
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<h2 id="Browser_compatibility">Browser compatibility</h2>
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<p></p><div class="bc-data"><a class="bc-github-link external" href="https://github.com/mdn/browser-compat-data" rel="noopener">Update compatibility data on GitHub</a><table class="bc-table bc-table-js"><thead><tr class="bc-platforms"><td></td><th class="bc-platform-desktop" colspan="6"><span>Desktop</span></th><th class="bc-platform-mobile" colspan="7"><span>Mobile</span></th><th class="bc-platform-server" colspan="1"><span>Server</span></th></tr><tr class="bc-browsers"><td></td><th class="bc-browser-chrome"><span class="bc-head-txt-label bc-head-icon-chrome">Chrome</span></th><th class="bc-browser-edge"><span class="bc-head-txt-label bc-head-icon-edge">Edge</span></th><th class="bc-browser-firefox"><span class="bc-head-txt-label bc-head-icon-firefox">Firefox</span></th><th class="bc-browser-ie"><span class="bc-head-txt-label bc-head-icon-ie">Internet Explorer</span></th><th class="bc-browser-opera"><span class="bc-head-txt-label bc-head-icon-opera">Opera</span></th><th class="bc-browser-safari"><span class="bc-head-txt-label bc-head-icon-safari">Safari</span></th><th class="bc-browser-webview_android"><span class="bc-head-txt-label bc-head-icon-webview_android">Android webview</span></th><th class="bc-browser-chrome_android"><span class="bc-head-txt-label bc-head-icon-chrome_android">Chrome for Android</span></th><th class="bc-browser-edge_mobile"><span class="bc-head-txt-label bc-head-icon-edge_mobile">Edge Mobile</span></th><th class="bc-browser-firefox_android"><span class="bc-head-txt-label bc-head-icon-firefox_android">Firefox for Android</span></th><th class="bc-browser-opera_android"><span class="bc-head-txt-label bc-head-icon-opera_android">Opera for Android</span></th><th class="bc-browser-safari_ios"><span class="bc-head-txt-label bc-head-icon-safari_ios">Safari on iOS</span></th><th class="bc-browser-samsunginternet_android"><span class="bc-head-txt-label bc-head-icon-samsunginternet_android">Samsung Internet</span></th><th class="bc-browser-nodejs"><span class="bc-head-txt-label bc-head-icon-nodejs">Node.js</span></th></tr></thead><tbody><tr><th scope="row"><a class="new" href="Reference/Global_Objects/String/trimEnd" rel="nofollow"><code>trimEnd</code></a></th><td class="bc-supports-yes bc-browser-chrome bc-has-history"><span class="bc-browser-name">Chrome</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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66<div class="bc-icons"></div><section class="bc-history" id="sect1"><dl><dt class="bc-supports-yes bc-supports"><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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66<div class="bc-icons"></div></dt><dd></dd><dt class="bc-supports-yes bc-supports"><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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Yes<div class="bc-icons"><abbr class="only-icon" title="Uses the non-standard name: <code>trimRight</code>"><span>Alternate Name</span><i class="ic-altname"></i></abbr> </div></dt><dd><abbr class="only-icon" title="Uses the non-standard name: <code>trimRight</code>"><span>Alternate Name</span><i class="ic-altname"></i></abbr> Uses the non-standard name: <code>trimRight</code></dd></dl></section></td><td class="bc-supports-unknown bc-browser-edge"><span class="bc-browser-name">Edge</span><abbr title="Compatibility unknown; please update this.">
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?
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</abbr></td><td class="bc-supports-yes bc-browser-firefox bc-has-history"><span class="bc-browser-name">Firefox</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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61<div class="bc-icons"></div><section class="bc-history" id="sect2"><dl><dt class="bc-supports-yes bc-supports"><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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61<div class="bc-icons"></div></dt><dd></dd><dt class="bc-supports-yes bc-supports"><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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3.5<div class="bc-icons"><abbr class="only-icon" title="Uses the non-standard name: <code>trimRight</code>"><span>Alternate Name</span><i class="ic-altname"></i></abbr> </div></dt><dd><abbr class="only-icon" title="Uses the non-standard name: <code>trimRight</code>"><span>Alternate Name</span><i class="ic-altname"></i></abbr> Uses the non-standard name: <code>trimRight</code></dd></dl></section></td><td class="bc-supports-no bc-browser-ie"><span class="bc-browser-name">IE</span><abbr class="bc-level-no only-icon" title="No support">
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<span>No support</span>
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</abbr>
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No</td><td class="bc-supports-yes bc-browser-opera"><span class="bc-browser-name">Opera</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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53</td><td class="bc-supports-unknown bc-browser-safari"><span class="bc-browser-name">Safari</span><abbr title="Compatibility unknown; please update this.">
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?
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</abbr></td><td class="bc-supports-yes bc-browser-webview_android bc-has-history"><span class="bc-browser-name">WebView Android</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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66<div class="bc-icons"></div><section class="bc-history" id="sect3"><dl><dt class="bc-supports-yes bc-supports"><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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66<div class="bc-icons"></div></dt><dd></dd><dt class="bc-supports-yes bc-supports"><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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Yes<div class="bc-icons"><abbr class="only-icon" title="Uses the non-standard name: <code>trimRight</code>"><span>Alternate Name</span><i class="ic-altname"></i></abbr> </div></dt><dd><abbr class="only-icon" title="Uses the non-standard name: <code>trimRight</code>"><span>Alternate Name</span><i class="ic-altname"></i></abbr> Uses the non-standard name: <code>trimRight</code></dd></dl></section></td><td class="bc-supports-yes bc-browser-chrome_android bc-has-history"><span class="bc-browser-name">Chrome Android</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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66<div class="bc-icons"></div><section class="bc-history" id="sect4"><dl><dt class="bc-supports-yes bc-supports"><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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66<div class="bc-icons"></div></dt><dd></dd><dt class="bc-supports-yes bc-supports"><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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Yes<div class="bc-icons"><abbr class="only-icon" title="Uses the non-standard name: <code>trimRight</code>"><span>Alternate Name</span><i class="ic-altname"></i></abbr> </div></dt><dd><abbr class="only-icon" title="Uses the non-standard name: <code>trimRight</code>"><span>Alternate Name</span><i class="ic-altname"></i></abbr> Uses the non-standard name: <code>trimRight</code></dd></dl></section></td><td class="bc-supports-unknown bc-browser-edge_mobile"><span class="bc-browser-name">Edge Mobile</span><abbr title="Compatibility unknown; please update this.">
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?
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</abbr></td><td class="bc-supports-yes bc-browser-firefox_android bc-has-history"><span class="bc-browser-name">Firefox Android</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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61<div class="bc-icons"></div><section class="bc-history" id="sect5"><dl><dt class="bc-supports-yes bc-supports"><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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61<div class="bc-icons"></div></dt><dd></dd><dt class="bc-supports-yes bc-supports"><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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4<div class="bc-icons"><abbr class="only-icon" title="Uses the non-standard name: <code>trimRight</code>"><span>Alternate Name</span><i class="ic-altname"></i></abbr> </div></dt><dd><abbr class="only-icon" title="Uses the non-standard name: <code>trimRight</code>"><span>Alternate Name</span><i class="ic-altname"></i></abbr> Uses the non-standard name: <code>trimRight</code></dd></dl></section></td><td class="bc-supports-yes bc-browser-opera_android"><span class="bc-browser-name">Opera Android</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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53</td><td class="bc-supports-unknown bc-browser-safari_ios"><span class="bc-browser-name">Safari iOS</span><abbr title="Compatibility unknown; please update this.">
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?
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</abbr></td><td class="bc-supports-unknown bc-browser-samsunginternet_android"><span class="bc-browser-name">Samsung Internet Android</span><abbr title="Compatibility unknown; please update this.">
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?
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</abbr></td><td class="bc-supports-yes bc-browser-nodejs"><span class="bc-browser-name">nodejs</span><abbr class="bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr>
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10.0.0</td></tr></tbody></table><section class="bc-legend" id="sect6"><h3 class="offscreen" id="Legend">Legend</h3><dl><dt><span class="bc-supports-yes bc-supports">
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<abbr class="bc-level bc-level-yes only-icon" title="Full support">
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<span>Full support</span>
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</abbr></span></dt><dd>Full support</dd><dt><span class="bc-supports-no bc-supports">
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<abbr class="bc-level bc-level-no only-icon" title="No support">
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<span>No support</span>
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</abbr></span></dt><dd>No support</dd><dt><span class="bc-supports-unknown bc-supports">
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<abbr class="bc-level bc-level-unknown only-icon" title="Compatibility unknown">
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<span>Compatibility unknown</span>
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</abbr></span></dt><dd>Compatibility unknown</dd><dt><abbr class="only-icon" title="Uses a non-standard name."><span>Uses a non-standard name.</span><i class="ic-altname"></i></abbr></dt><dd>Uses a non-standard name.</dd></dl></section></div><p></p>
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<h2 id="See_also" name="See_also">相关链接</h2>
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<ul>
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<li><a href="Reference/Global_Objects/String/trim" title="trim() 方法会从一个字符串的两端删除空白字符。在这个上下文中的空白字符是所有的空白字符 (space, tab, no-break space 等) 以及所有行终止符字符（如 LF，CR）。"><code>String.prototype.trim()</code></a></li>
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<li><a class="new" href="Reference/Global_Objects/String/trimStart" rel="nofollow" title="此页面仍未被本地化, 期待您的翻译!"><code>String.prototype.trimStart()</code></a></li>
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</ul>
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</article> |