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+---
+title: Reflect.apply()
+slug: Web/JavaScript/Reference/Global_Objects/Reflect/apply
+tags:
+ - JavaScript
+ - Method
+ - Reference
+ - Reflect
+translation_of: Web/JavaScript/Reference/Global_Objects/Reflect/apply
+---
+<div>{{JSRef}}</div>
+
+<p>静态方法 <code><strong>Reflect</strong></code><strong><code>.apply()</code></strong> 通过指定的参数列表发起对目标(target)函数的调用。</p>
+
+<div>{{EmbedInteractiveExample("pages/js/reflect-apply.html")}}</div>
+
+
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox">Reflect.apply(target, thisArgument, argumentsList)
+</pre>
+
+<h3 id="参数">参数</h3>
+
+<dl>
+ <dt>target</dt>
+ <dd>目标函数。</dd>
+ <dt>thisArgument</dt>
+ <dd>target函数调用时绑定的this对象。</dd>
+ <dt>argumentsList</dt>
+ <dd>target函数调用时传入的实参列表,该参数应该是一个类数组的对象。</dd>
+</dl>
+
+<h3 id="返回值">返回值</h3>
+
+<p>返回值是调用完带着指定参数和 <code>this</code> 值的给定的函数后返回的结果。</p>
+
+<h3 id="异常">异常</h3>
+
+<p>如果 <code>target</code> 对象不可调用,抛出 {{jsxref("TypeError")}}。</p>
+
+<h2 id="描述">描述</h2>
+
+<p>该方法与ES5中{{jsxref("Function.prototype.apply()")}}方法类似:调用一个方法并且显式地指定 <code>this</code> 变量和参数列表(arguments) ,参数列表可以是数组,或类似数组的对象。</p>
+
+<pre class="brush: js">Function.prototype.apply.call(Math.floor, undefined, [1.75]);</pre>
+
+<p>使用 <code>Reflect.apply</code> 方法会使代码更加简洁易懂。</p>
+
+<h2 id="使用示例">使用示例</h2>
+
+<h3 id="Reflect.apply"><code>Reflect.apply()</code></h3>
+
+<pre class="brush: js">Reflect.apply(Math.floor, undefined, [1.75]);
+// 1;
+
+Reflect.apply(String.fromCharCode, undefined, [104, 101, 108, 108, 111]);
+// "hello"
+
+Reflect.apply(RegExp.prototype.exec, /ab/, ["confabulation"]).index;
+// 4
+
+Reflect.apply("".charAt, "ponies", [3]);
+// "i"
+</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('ES6', '#sec-reflect.apply', 'Reflect.apply')}}</td>
+ <td>{{Spec2('ES6')}}</td>
+ <td>首次定义.</td>
+ </tr>
+ <tr>
+ <td>{{SpecName('ESDraft', '#sec-reflect.apply', 'Reflect.apply')}}</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>
+
+
+
+<p>{{Compat("javascript.builtins.Reflect.apply")}}</p>
+
+<h2 id="相关连接">相关连接</h2>
+
+<ul>
+ <li>{{jsxref("Reflect")}}</li>
+ <li>{{jsxref("Function.prototype.apply()")}}</li>
+</ul>