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authorPeter Bengtsson <mail@peterbe.com>2020-12-08 14:40:17 -0500
committerPeter Bengtsson <mail@peterbe.com>2020-12-08 14:40:17 -0500
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+---
+title: Function.arguments
+slug: Web/JavaScript/Reference/Global_Objects/Function/arguments
+translation_of: Web/JavaScript/Reference/Global_Objects/Function/arguments
+---
+<div>{{JSRef}} {{deprecated_header}}</div>
+
+<p><code><strong><em>function</em>.arguments</strong></code> 属性代表传入函数的实参,它是一个类数组对象。</p>
+
+<h2 id="描述">描述</h2>
+
+<p><code><em>function</em>.arguments</code> 已经被废弃了, 现在推荐的做法是使用函数内部可用的 {{jsxref("Functions/arguments", "arguments")}} 对象来访问函数的实参。</p>
+
+<p>在函数递归调用的时候(在某一刻同一个函数运行了多次,也就是有多套实参),那么 <code>arguments</code> 属性的值是最近一次该函数调用时传入的实参,下面的示例有演示。</p>
+
+<p>如果函数不在执行期间,那么该函数的 <code>arguments</code> 属性的值是 <code>null</code>。</p>
+
+<h2 id="示例">示例</h2>
+
+<pre class="brush: js">function f(n) { g(n - 1); }
+
+function g(n) {
+ console.log('before: ' + g.arguments[0]);
+ if (n &gt; 0) { f(n); }
+ console.log('after: ' + g.arguments[0]);
+}
+
+f(2);
+
+console.log('函数退出后的 arguments 属性值:' + g.arguments);
+
+// 输出:
+
+// before: 1
+// before: 0
+// after: 0
+// after: 1
+// 函数退出后的 arguments 属性值:null
+</pre>
+
+<h2 id="规范">规范</h2>
+
+<table class="standard-table">
+ <tbody>
+ <tr>
+ <th scope="col">规范名称</th>
+ <th scope="col">规范状态</th>
+ <th scope="col">备注</th>
+ </tr>
+ <tr>
+ <td>{{SpecName('ES1')}}</td>
+ <td>{{Spec2('ES1')}}</td>
+ <td>arguments 属性首次实现于 JavaScript 1.0,首次添加进规范是在 ES1,在 ES3 中被删除。</td>
+ </tr>
+ <tr>
+ <td>{{SpecName('ES5.1', '#sec-10.6', 'arguments object')}}</td>
+ <td>{{Spec2('ES5.1')}}</td>
+ <td>{{jsxref("Functions/arguments", "arguments")}}</td>
+ </tr>
+ <tr>
+ <td>{{SpecName('ES6', '#sec-arguments-object', 'arguments object')}}</td>
+ <td>{{Spec2('ES6')}}</td>
+ <td>{{jsxref("Functions/arguments", "arguments")}}</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="相关链接">相关链接</h2>
+
+<ul>
+ <li>{{jsxref("Functions/arguments", "arguments")}}</li>
+ <li>{{jsxref("Functions", "函数和函数的作用域", "", 1)}}</li>
+</ul>