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diff --git a/files/zh-cn/web/javascript/reference/operators/expression_closures/index.html b/files/zh-cn/web/javascript/reference/operators/expression_closures/index.html deleted file mode 100644 index e5dee577bc..0000000000 --- a/files/zh-cn/web/javascript/reference/operators/expression_closures/index.html +++ /dev/null @@ -1,76 +0,0 @@ ---- -title: Expression closures -slug: Web/JavaScript/Reference/Operators/Expression_closures -tags: - - Functions - - JavaScript - - Reference -translation_of: Archive/Web/JavaScript/Expression_closures ---- -<div class="warning"><strong>非标准,不要使用!</strong><br> -闭包表达式语法是废弃的 SpiderMonkey 的特性,并且<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=1083458">将被移除</a>。为了长远使用,考虑使用<a href="/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions">箭头函数</a>。</div> - -<div>{{jsSidebar("Operators")}}</div> - -<p>表达式闭包是定义简单函数的一种便捷方式。</p> - -<h2 id="语法">语法</h2> - -<pre class="syntaxbox">function [<em>name</em>]([<em>param1</em>[, <em>param2[</em>, ..., <em>paramN</em>]]]) - <em>expression</em> -</pre> - -<h3 id="参数">参数</h3> - -<dl> - <dt><code>name</code></dt> - <dd>函数名。函数名可以省略不写,称为匿名函数。函数名仅在函数体有效。</dd> - <dt><code>paramN</code></dt> - <dd>形参名。一个函数最多可以有255个参数。</dd> - <dt><code>expression</code></dt> - <dd>构成函数体的表达式。</dd> -</dl> - -<h2 id="描述">描述</h2> - -<p>这一附加特性只是编写简单函数的快捷方式,让语言更类似通常的 <a class="external" href="http://en.wikipedia.org/wiki/Lambda_calculus#Lambda_calculus_and_programming_languages">Lambda 标记</a>。</p> - -<p>JavaScript 1.7 及之前版本:</p> - -<pre class="brush: js">function(x) { return x * x; }</pre> - -<p>JavaScript 1.8:</p> - -<pre class="brush: js">function(x) x * x</pre> - -<p>该语法支持省略花括号和'return'语句。使用这种编码的目的只是为了在句法上使得代码更加简化,但除此之外没有其他好处。</p> - -<h2 id="示例">示例</h2> - -<p>一种绑定事件监听器的便捷方式:</p> - -<pre class="brush: js"> document.addEventListener("click", function() false, true); -</pre> - -<p>在 JavaScript 1.6 中的一些数组函数中使用该标记:</p> - -<pre class="brush: js">elems.some(function(elem) elem.type == "text"); -</pre> - -<h2 id="浏览器兼容">浏览器兼容</h2> - -<div class="hidden">The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</div> - -<p>{{Compat("javascript.operators.expression_closures")}}</p> - -<h2 id="相关链接">相关链接</h2> - -<ul> - <li>{{jsxref("Functions_and_function_scope", "Functions and function scope")}}</li> - <li>{{jsxref("Function")}}</li> - <li>{{jsxref("Statements/function", "function statement")}}</li> - <li>{{jsxref("Operators/function", "function expression")}}</li> - <li>{{jsxref("Statements/function*", "function* statement")}}</li> - <li>{{jsxref("Operators/function*", "function* expression")}}</li> - <li>{{jsxref("GeneratorFunction")}}</li> -</ul> |