From 33058f2b292b3a581333bdfb21b8f671898c5060 Mon Sep 17 00:00:00 2001
From: Peter Bengtsson <mail@peterbe.com>
Date: Tue, 8 Dec 2020 14:40:17 -0500
Subject: initial commit

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 .../global_objects/proxy/handler/apply/index.html  | 117 +++++++++++++++++++++
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+---
+title: handler.apply()
+slug: Web/JavaScript/Reference/Global_Objects/Proxy/handler/apply
+tags:
+  - ECMAScript6
+  - JavaScript
+  - Method
+  - Proxy
+translation_of: Web/JavaScript/Reference/Global_Objects/Proxy/Proxy/apply
+---
+<div>{{JSRef}}</div>
+
+<p><strong><code>handler.apply()</code></strong> 方法用于拦截函数的调用。</p>
+
+<div>{{EmbedInteractiveExample("pages/js/proxyhandler-apply.html", "taller")}}</div>
+
+<p class="hidden">此交互式示例的源代码存储在GitHub存储库中。 如果您想为交互式示例项目做出贡献，请克隆 <a href="https://github.com/mdn/interactive-examples">https://github.com/mdn/interactive-examples</a> 并向我们发起拉取请求</p>
+
+<h2 id="语法">语法</h2>
+
+<pre class="brush: js">var p = new Proxy(target, {
+  apply: function(target, thisArg, argumentsList) {
+  }
+});
+</pre>
+
+<h3 id="参数">参数</h3>
+
+<p>以下是传递给apply方法的参数，<code>this上下文绑定在</code>handler对象上.</p>
+
+<dl>
+ <dt><code>target</code></dt>
+ <dd>目标对象（函数）。</dd>
+ <dt><code>thisArg</code></dt>
+ <dd>被调用时的上下文对象。</dd>
+ <dt><code>argumentsList</code></dt>
+ <dd>被调用时的参数数组。</dd>
+</dl>
+
+<h3 id="返回值">返回值</h3>
+
+<p><code>apply方法可以返回任何值。</code></p>
+
+<h2 id="描述">描述</h2>
+
+<p><strong><code>handler.apply</code></strong> 方法用于拦截函数的调用。</p>
+
+<h3 id="拦截">拦截</h3>
+
+<p>该方法会拦截目标对象的以下操作:</p>
+
+<ul>
+ <li><code>proxy(...args)</code></li>
+ <li>{{jsxref("Function.prototype.apply()")}} 和 {{jsxref("Function.prototype.call()")}}</li>
+ <li>{{jsxref("Reflect.apply()")}}</li>
+</ul>
+
+<h3 id="约束">约束</h3>
+
+<p>如果违反了以下约束，代理将抛出一个TypeError：</p>
+
+<p><code>target</code>必须是可被调用的。也就是说，它必须是一个函数对象。</p>
+
+<h2 id="示例">示例</h2>
+
+<p>以下代码演示如何捕获函数的调用。</p>
+
+<pre class="brush: js">var p = new Proxy(function() {}, {
+  apply: function(target, thisArg, argumentsList) {
+    console.log('called: ' + argumentsList.join(', '));
+    return argumentsList[0] + argumentsList[1] + argumentsList[2];
+  }
+});
+
+console.log(p(1, 2, 3)); // "called: 1, 2, 3"
+                         // 6
+</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('ES2015', '#sec-proxy-object-internal-methods-and-internal-slots-call-thisargument-argumentslist', '[[Call]]')}}</td>
+   <td>{{Spec2('ES2015')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ESDraft', '#sec-proxy-object-internal-methods-and-internal-slots-call-thisargument-argumentslist', '[[Call]]')}}</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>
+<div class="hidden">此页面上的兼容性表格由结构化数据生成。 如果您想为数据做出贡献，请检出 <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> 并向我们发出拉取请求。</div>
+
+<p>{{Compat("javascript.builtins.Proxy.handler.apply")}}</p>
+</div>
+
+<h2 id="另见">另见</h2>
+
+<ul>
+ <li>{{jsxref("Proxy")}}</li>
+ <li>{{jsxref("Proxy.handler", "handler")}}</li>
+ <li>{{jsxref("Function.prototype.apply")}}</li>
+ <li>{{jsxref("Function.prototype.call")}}</li>
+ <li>{{jsxref("Reflect.apply()")}}</li>
+</ul>
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