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+---
+title: Function.prototype.isGenerator()
+slug: Web/JavaScript/Reference/Global_Objects/Function/isGenerator
+translation_of: Archive/Web/JavaScript/Function.isGenerator
+---
+<div>{{JSRef("Global_Objects", "Function")}} {{non-standard_header}}</div>
+
+<h2 id="概述">概述</h2>
+
+<p>判断一个函数是否是一个<a href="/zh-cn/JavaScript/Guide/Iterators_and_Generators#Generators.3a_a_better_way_to_build_Iterators" title="zh-cn/Core JavaScript 1.5 Guide/Iterators and Generators#Generators.3a a better way to build Iterators">生成器</a>.</p>
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox"><code><var>fun</var>.isGenerator()</code></pre>
+
+<h2 id="描述">描述</h2>
+
+<p>该方法用来判断一个函数是否是一个<a href="/zh-cn/JavaScript/Guide/Iterators_and_Generators#Generators.3a_a_better_way_to_build_Iterators" title="zh-cn/Core JavaScript 1.5 Guide/Iterators and Generators#Generators.3a a better way to build Iterators">生成器</a>.</p>
+
+<h2 id="例子">例子</h2>
+
+<pre class="brush: js">function f() {}
+function* g() {
+  yield 42;
+}
+console.log("f.isGenerator() = " + f.isGenerator());
+console.log("g.isGenerator() = " + g.isGenerator());
+</pre>
+
+<p>上面代码的输出结果为</p>
+
+<pre>f.isGenerator() = false
+g.isGenerator() = true
+</pre>
+
+<h2 id="相关链接">相关链接</h2>
+
+<ul>
+ <li><a href="/zh-cn/JavaScript/Guide/Iterators_and_Generators" title="zh-cn/Core JavaScript 1.5 Guide/Iterators and Generators">迭代器和生成器</a></li>
+</ul>