files/zh-cn/web/javascript/reference/global_objects/string/fixed/index.html


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---
title: String.prototype.fixed()
slug: Web/JavaScript/Reference/Global_Objects/String/fixed
tags:
  - Deprecated
  - HTML wrapper methods
  - JavaScript
translation_of: Web/JavaScript/Reference/Global_Objects/String/fixed
---
<div>{{JSRef}} {{deprecated_header}}</div>

<p>fixed()方法创建了一个&lt;tt&gt;标签元素将字符串包裹起来，从而让这个字符串里面的内容具有固定间距。</p>

<h2 id="语法">语法</h2>

<pre class="syntaxbox">str.fixed()
</pre>

<h3 id="Return_value">Return value</h3>

<p>返回一个表示 {{HTMLElement("tt")}} HTML 元素的字符串。</p>

<h2 id="描述">描述</h2>

<p><code style="font-size: 14px; font-style: normal; font-weight: normal; line-height: 1.5;">fixed()</code> 方法将一个字符串包裹在&lt;tt&gt;&lt;/tt&gt;标签中，比如: <code style="font-size: 14px; font-style: normal; font-weight: normal; line-height: 1.5;">"&lt;tt&gt;str&lt;/tt&gt;"</code>.</p>

<h2 id="举例">举例</h2>

<h3 id="使用fixed()">使用fixed()</h3>

<p>下面的示例代码使用这个fixed方法来改变字符串的格式：</p>

<pre class="brush: js">var worldString = 'Hello, world';
console.log(worldString.fixed()); // "&lt;tt&gt;Hello, world&lt;/tt&gt;"
</pre>

<h2 id="说明">说明</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">Specification</th>
   <th scope="col">Status</th>
   <th scope="col">Comment</th>
  </tr>
  <tr>
   <td>{{SpecName('ES6', '#sec-string.prototype.fixed', 'String.prototype.fixed')}}</td>
   <td>{{Spec2('ES6')}}</td>
   <td>Initial definition. Implemented in JavaScript 1.0. Defined in the (normative) Annex B for Additional ECMAScript Features for Web Browsers.</td>
  </tr>
  <tr>
   <td>{{SpecName('ESDraft', '#sec-string.prototype.fixed', 'String.prototype.fixed')}}</td>
   <td>{{Spec2('ESDraft')}}</td>
   <td>Defined in the (normative) Annex B for Additional ECMAScript Features for Web Browsers.</td>
  </tr>
 </tbody>
</table>

<h2 id="浏览器兼容性">浏览器兼容性</h2>

<div>{{CompatibilityTable}}</div>

<div>
<table class="compat-table">
 <tbody>
  <tr>
   <th>版本</th>
   <th>Chrome</th>
   <th>Firefox (Gecko)</th>
   <th>Internet Explorer</th>
   <th>Opera</th>
   <th>Safari</th>
  </tr>
  <tr>
   <td>Basic support</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatGeckoDesktop("1.0")}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<div>
<table class="compat-table">
 <tbody>
  <tr>
   <th>版本</th>
   <th>Android</th>
   <th>Chrome for Android</th>
   <th>Firefox Mobile (Gecko)</th>
   <th>IE Mobile</th>
   <th>Opera Mobile</th>
   <th>Safari Mobile</th>
  </tr>
  <tr>
   <td>Basic support</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatGeckoMobile("1.0")}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<h2 id="相关链接">相关链接</h2>

<ul>
 <li>{{jsxref("String.prototype.bold()")}}</li>
 <li>{{jsxref("String.prototype.italics()")}}</li>
 <li>{{jsxref("String.prototype.strike()")}}</li>
</ul>