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| author | Florian Merz <me@fiji-flo.de> | 2021-02-11 12:56:40 +0100 |
|---|---|---|
| committer | Florian Merz <me@fiji-flo.de> | 2021-02-11 12:56:40 +0100 |
| commit | 310fd066e91f454b990372ffa30e803cc8120975 (patch) | |
| tree | d5d900deb656a5da18e0b60d00f0db73f3a2e88e /files/zh-cn/web/javascript/reference/global_objects/proxy/handler/apply | |
| parent | 8260a606c143e6b55a467edf017a56bdcd6cba7e (diff) | |
| download | translated-content-310fd066e91f454b990372ffa30e803cc8120975.tar.gz translated-content-310fd066e91f454b990372ffa30e803cc8120975.tar.bz2 translated-content-310fd066e91f454b990372ffa30e803cc8120975.zip | |
unslug zh-cn: move
Diffstat (limited to 'files/zh-cn/web/javascript/reference/global_objects/proxy/handler/apply')
| -rw-r--r-- | files/zh-cn/web/javascript/reference/global_objects/proxy/handler/apply/index.html | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/files/zh-cn/web/javascript/reference/global_objects/proxy/handler/apply/index.html b/files/zh-cn/web/javascript/reference/global_objects/proxy/handler/apply/index.html deleted file mode 100644 index 62b8b67f5f..0000000000 --- a/files/zh-cn/web/javascript/reference/global_objects/proxy/handler/apply/index.html +++ /dev/null @@ -1,117 +0,0 @@ ---- -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> |
