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---
title: function* expression
slug: Web/JavaScript/Reference/Operatörler/function*
translation_of: Web/JavaScript/Reference/Operators/function*
---
<div>{{jsSidebar("Operators")}}</div>
<p>The <strong><code>function*</code></strong> keyword can be used to define a generator function inside an expression.</p>
<div>{{EmbedInteractiveExample("pages/js/expressions-functionasteriskexpression.html")}}</div>
<h2 id="Syntax">Syntax</h2>
<pre class="syntaxbox">function* [<em>name</em>]([<em>param1</em>[, <em>param2[</em>, ..., <em>paramN</em>]]]) {
<em>statements</em>
}</pre>
<h3 id="Parametreler">Parametreler</h3>
<dl>
<dt><code>name</code></dt>
<dd>The function name. Can be omitted, in which case the function is <em>anonymous</em>. The name is only local to the function body.</dd>
<dt><code>paramN</code></dt>
<dd>Argüman adıdır, bir fonksiyon maxiumum 255 argüman alır.</dd>
<dt><code>statements</code></dt>
<dd>Fonksiyon kodları.</dd>
</dl>
<h2 id="Açıklama">Açıklama</h2>
<p>A <code>function*</code> expression is very similar to and has almost the same syntax as a {{jsxref('Statements/function*', 'function* statement')}}. The main difference between a <code>function*</code> expression and a <code>function*</code> statement is the <em>function name,</em> which can be omitted in <code>function*</code> expressions to create <em>anonymous</em> generator functions. See also the chapter about <a href="/en-US/docs/Web/JavaScript/Reference/Functions">functions</a> for more information.</p>
<h2 id="Örnekler">Örnekler</h2>
<p>Aşağıdaki adlandırılmamış fonksiyondur ve gelen değer karesini verir.</p>
<pre class="brush: js">var x = function*(y) {
yield y * y;
};
</pre>
<h2 id="Özellikler">Özellikler</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', '#', 'function*')}}</td>
<td>{{Spec2('ES2015')}}</td>
<td>Initial definition.</td>
</tr>
<tr>
<td>{{SpecName('ESDraft', '#', 'function*')}}</td>
<td>{{Spec2('ESDraft')}}</td>
<td> </td>
</tr>
</tbody>
</table>
<h2 id="Tarayıcı_uyumluluğu">Tarayıcı uyumluluğu</h2>
<p>{{Compat("javascript.operators.function_star")}}</p>
<h2 id="Bakabilirsiniz">Bakabilirsiniz</h2>
<ul>
<li>{{jsxref("Statements/function*", "function* statement")}}</li>
<li>{{jsxref("GeneratorFunction")}} object</li>
<li><a href="/en-US/docs/Web/JavaScript/Guide/The_Iterator_protocol">The Iterator protocol</a></li>
<li>{{jsxref("Operators/yield", "yield")}}</li>
<li>{{jsxref("Operators/yield*", "yield*")}}</li>
<li>{{jsxref("Function")}} object</li>
<li>{{jsxref("Statements/function", "function statement")}}</li>
<li>{{jsxref("Operators/function", "function expression")}}</li>
<li>{{jsxref("Functions_and_function_scope", "Functions and function scope")}}</li>
</ul>
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