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---
title: Map.prototype.entries()
slug: Web/JavaScript/Reference/Global_Objects/Map/entries
translation_of: Web/JavaScript/Reference/Global_Objects/Map/entries
tags:
- ECMAScript 2015
- Iterator
- JavaScript
- Map
- Method
- Prototype
browser-compat: javascript.builtins.Map.entries
---
<div>{{JSRef}}</div>
<p><code><strong>entries()</strong></code> 方法返回一个新的包含 <code>[key, value]</code> 对的 <code><strong>Iterator</strong></code> 对象，返回的迭代器的迭代顺序与 <code>Map</code> 对象的插入顺序相同。</p>
<p>{{EmbedInteractiveExample("pages/js/map-prototype-entries.html")}}</p>
<h2 id="语法">语法</h2>
<pre><code><var>myMap</var>.entries()</code>
</pre>
<h3 id="返回值">返回值</h3>
<p>一个新的 {{jsxref("Map")}} 迭代器对象.</p>
<h2 id="示例">示例</h2>
<h3 id="entries()的使用"><code>entries()</code>的使用</h3>
<pre class="brush:js">var myMap = new Map();
myMap.set("0", "foo");
myMap.set(1, "bar");
myMap.set({}, "baz");
var mapIter = myMap.entries();
console.log(mapIter.next().value); // ["0", "foo"]
console.log(mapIter.next().value); // [1, "bar"]
console.log(mapIter.next().value); // [Object, "baz"]
</pre>
<h2 id="规范">规范</h2>
<table>
<thead>
<tr>
<th scope="col">Specification</th>
<th scope="col">Status</th>
<th scope="col">Comment</th>
</tr>
</thead>
<tbody>
<tr>
<td>{{SpecName('ESDraft', '#sec-map.prototype.entries', 'Map.prototype.entries')}}</td>
<td>{{Spec2('ESDraft')}}</td>
<td></td>
</tr>
<tr>
<td>{{SpecName('ES2015', '#sec-map.prototype.entries', 'Map.prototype.entries')}}</td>
<td>{{Spec2('ES2015')}}</td>
<td>Initial definition.</td>
</tr>
</tbody>
</table>
<h2 id="浏览器兼容性">浏览器兼容性</h2>
<p>{{Compat("javascript.builtins.Map.entries")}}</p>
<h2 id="相关链接">相关链接</h2>
<ul>
<li>{{jsxref("Map.prototype.keys()")}}</li>
<li>{{jsxref("Map.prototype.values()")}}</li>
</ul>
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