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---
title: Number.toInteger()
slug: Web/JavaScript/Reference/Global_Objects/Number/toInteger
translation_of: Archive/Web/JavaScript/Number.toInteger
---
<div>{{JSRef("Global_Objects", "Number")}} {{obsolete_header("33")}} {{non-standard_header}}</div>
<h2 id="Summary" name="Summary">概览</h2>
<p><strong><code>Number.toInteger()</code></strong> 用来将参数转换成整数,但该方法的实现已被移除.</p>
<p>如果参数是 {{jsxref("Global_Objects/NaN", "NaN")}}, {{jsxref("Global_Objects/null", "null")}} 或 {{jsxref("Global_Objects/undefined", "undefined")}}, 会返回0 . 如果参数值是true返回1,false的话返回<span style="line-height: 19.0909080505371px;">0</span>.</p>
<h2 id="Syntax" name="Syntax">语法</h2>
<pre class="syntaxbox"><code>Number.toInteger(<var>number</var>)</code></pre>
<h3 id="Parameters" name="Parameters">参数</h3>
<dl>
<dt><code>number</code></dt>
<dd>将被转换成整数的参数.</dd>
</dl>
<h2 id="Examples" name="Examples">示例</h2>
<h3 id="Example:_Using_toInteger" name="Example:_Using_toInteger">例子: 使用 <code>toInteger()方法</code></h3>
<pre class="brush: js">Number.toInteger(0.1); // 0
Number.toInteger(1); // 1
Number.toInteger(Math.PI); // 3
Number.toInteger(null); // 0
</pre>
<h2 id="Specifications" name="Specifications">Specifications</h2>
<ul>
<li><code>Number.toInteger()</code> 是<span style="line-height: 19.0909080505371px;">ECMAScript 6 起草的一部分</span>, 但在2013-8-23的Draft Rev 17 中被移除 .</li>
</ul>
<h2 id="Browser_compatibility" name="Browser_compatibility">浏览器兼容性</h2>
<div>{{CompatibilityTable}}</div>
<div id="compat-desktop">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</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>{{CompatNo}}</td>
<td>Firefox 16 to 32</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
</tr>
</tbody>
</table>
</div>
<div id="compat-mobile">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</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>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>Firefox 16 to 32</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
</tr>
</tbody>
</table>
</div>
<h2 id="See_also" name="See_also">See also</h2>
<ul>
<li>归属于 {{jsxref("Global_Objects/Number", "Number")}} 对象.</li>
</ul>
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