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


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---
title: RangeError
slug: Web/JavaScript/Reference/Global_Objects/RangeError
translation_of: Web/JavaScript/Reference/Global_Objects/RangeError
---
<div>{{JSRef}}</div>

<p><strong>RangeError</strong>对象标明一个错误，当一个值不在其所允许的范围或者集合中。</p>

<h2 id="语法">语法</h2>

<pre class="syntaxbox"><code>new RangeError([<var>message</var>[, <var>fileName</var>[, <var>lineNumber</var>]]])</code></pre>

<h3 id="参数">参数</h3>

<dl>
 <dt><code>message</code></dt>
 <dd>可选，可读的错误描述</dd>
 <dt><code>fileName</code> {{non-standard_inline}}</dt>
 <dd>可选，包含造成异常代码的文件名</dd>
 <dt><code>lineNumber</code> {{non-standard_inline}}</dt>
 <dd>可选，造成异常的代码所在的行数</dd>
</dl>

<h2 id="描述">描述</h2>

<p>试图传递一个number参数给一个范围内不包含该number的函数时则会引发<strong>RangeError</strong>。当传递一个不合法的length值作为{{jsxref("Array")}} 构造器的参数创建数组，或者传递错误值到数值计算方法（{{jsxref("Number.toExponential()")}}，{{jsxref("Number.toFixed()")}} ，{{jsxref("Number.toPrecision()")}}），会出现<strong>RangeError</strong>。.</p>

<h2 id="属性">属性</h2>

<dl>
 <dt>{{jsxref("RangeError.prototype")}}</dt>
 <dd><code>允许在<strong>RangeError</strong>对象上附加属性。</code></dd>
</dl>

<h2 id="方法">方法</h2>

<p><code>RangeError</code>全局对象没有自带方法，但它通过可以原型链继承一些方法。</p>

<h2 id="RangeError实例"><code>RangeError</code>实例</h2>

<h3 id="属性_2">属性</h3>

<div>{{page('/en-US/docs/Web/JavaScript/Reference/Global_Objects/RangeError/prototype', 'Properties')}}</div>

<h3 id="方法_2">方法</h3>

<div>{{page('/en-US/docs/Web/JavaScript/Reference/Global_Objects/RangeError/prototype', 'Methods')}}</div>

<h2 id="例子">例子</h2>

<h3 id="使用RangeError">使用<code>RangeError</code></h3>

<pre class="brush: js">var check = function(num) {
  if (num &lt; MIN || num &gt; MAX) {
    throw new RangeError('Parameter must be between ' + MIN + ' and ' + MAX);
  }
};

try {
  check(500);
}
catch (e) {
  if (e instanceof RangeError) {
    // 处理越界错误
  }
}
</pre>

<h2 id="规范">规范</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('ES3')}}</td>
   <td>{{Spec2('ES3')}}</td>
   <td>Initial definition.</td>
  </tr>
  <tr>
   <td>{{SpecName('ES5.1', '#sec-15.11.6.2', 'RangeError')}}</td>
   <td>{{Spec2('ES5.1')}}</td>
   <td> </td>
  </tr>
  <tr>
   <td>{{SpecName('ES6', '#sec-native-error-types-used-in-this-standard-rangeerror', 'RangeError')}}</td>
   <td>{{Spec2('ES6')}}</td>
   <td> </td>
  </tr>
  <tr>
   <td>{{SpecName('ESDraft', '#sec-native-error-types-used-in-this-standard-rangeerror', 'RangeError')}}</td>
   <td>{{Spec2('ESDraft')}}</td>
   <td> </td>
  </tr>
 </tbody>
</table>

<h2 id="浏览器兼容性">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>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</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>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<h2 id="相关连接">相关连接</h2>

<ul>
 <li>{{jsxref("Error")}}</li>
 <li>{{jsxref("RangeError.prototype")}}</li>
 <li>{{jsxref("Array")}}</li>
 <li>{{jsxref("Number.toExponential()")}}</li>
 <li>{{jsxref("Number.toFixed()")}}</li>
 <li>{{jsxref("Number.toPrecision()")}}</li>
</ul>