---
title: 'Set.prototype[@@iterator]()'
slug: Web/JavaScript/Reference/Global_Objects/Set/@@iterator
tags:
  - ECMAScript2015
  - Iterator
  - JavaScript
  - Method
  - set
translation_of: Web/JavaScript/Reference/Global_Objects/Set/@@iterator
---
<div>{{JSRef}}</div>

<p><code><strong>@@iterator</strong></code> 属性的初始值和 {{jsxref("Set.prototype.values()", "values")}} 属性的初始值是同一个函数。</p>

<div>{{EmbedInteractiveExample("pages/js/set-prototype-@@iterator.html")}}</div>



<h2 id="Syntax">Syntax</h2>

<pre class="syntaxbox"><code><em>mySet</em>[Symbol.iterator]</code></pre>

<h3 id="Return_value">Return value</h3>

<p>返回 <code>Set</code> <strong>iterator</strong> 函数，默认值是 {{jsxref("Set.prototype.values()", "values()")}} 函数。</p>

<h2 id="Examples">Examples</h2>

<h3 id="Using_iterator">Using <code>[@@iterator]()</code></h3>

<pre class="brush:js">const mySet = new Set();
mySet.add('0');
mySet.add(1);
mySet.add({});

const setIter = mySet[Symbol.iterator]();

console.log(setIter.next().value); // "0"
console.log(setIter.next().value); // 1
console.log(setIter.next().value); // Object
</pre>

<h3 id="Using_iterator_with_for..of">Using <code>[@@iterator]()</code> with <code>for..of</code></h3>

<pre class="brush:js">const mySet = new Set();
mySet.add('0');
mySet.add(1);
mySet.add({});

for (const v of mySet) {
  console.log(v);
}
</pre>

<h2 id="Specifications">Specifications</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">Specification</th>
  </tr>
  <tr>
   <td>{{SpecName('ESDraft', '#sec-set.prototype-@@iterator', 'Set.prototype[@@iterator]')}}</td>
  </tr>
 </tbody>
</table>

<h2 id="Browser_compatibility">Browser compatibility</h2>



<p>{{Compat("javascript.builtins.Set.@@iterator")}}</p>

<h2 id="See_also">See also</h2>

<ul>
 <li>{{jsxref("Set.prototype.entries()")}}</li>
 <li>{{jsxref("Set.prototype.keys()")}}</li>
 <li>{{jsxref("Set.prototype.values()")}}</li>
</ul>