---
title: Map.prototype.entries()
slug: Web/JavaScript/Reference/Global_Objects/Map/entries
tags:
  - ECMAScript 2015
  - Iterator
  - JavaScript
  - Map
  - Method
  - Prototype
translation_of: Web/JavaScript/Reference/Global_Objects/Map/entries
original_slug: Web/JavaScript/Reference/Global_Objects/Map/entries
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>