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authorPeter Bengtsson <mail@peterbe.com>2020-12-08 14:41:15 -0500
committerPeter Bengtsson <mail@peterbe.com>2020-12-08 14:41:15 -0500
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+---
+title: 'Map.prototype[@@iterator]()'
+slug: Web/JavaScript/Reference/Global_Objects/Map/@@iterator
+tags:
+ - ECMAScript 2015
+ - Iterator
+ - JavaScript
+ - Map
+ - Method
+ - Prototype
+ - Reference
+translation_of: Web/JavaScript/Reference/Global_Objects/Map/@@iterator
+---
+<div>{{JSRef}}</div>
+
+<p class="seoSummary">Der initialewert der <code><strong>@@iterator</strong></code> Eigenschaft enthält das selbe Funktionsobjekt wie der Wert in der {{jsxref("Map.prototype.entries()", "entries")}} Methode.</p>
+
+<div>{{EmbedInteractiveExample("pages/js/map-prototype-@@iterator.html")}}</div>
+
+
+
+<h2 id="Syntax">Syntax</h2>
+
+<pre class="syntaxbox"><code><em>myMap</em>[Symbol.iterator]</code></pre>
+
+<h3 id="Rückgabewert">Rückgabewert</h3>
+
+<p>Die <strong>iterator</strong> Funktion von <code>map</code> ist im Standardfall die {{jsxref("Map.prototype.entries()", "entries()")}} Funktion.</p>
+
+<h2 id="Beispiele">Beispiele</h2>
+
+<h3 id="Einsatz_von_iterator()">Einsatz von <code>[@@iterator]()</code></h3>
+
+<pre class="brush:js">const myMap = new Map();
+myMap.set('0', 'foo');
+myMap.set(1, 'bar');
+myMap.set({}, 'baz');
+
+const mapIter = myMap[Symbol.iterator]();
+
+console.log(mapIter.next().value); // ["0", "foo"]
+console.log(mapIter.next().value); // [1, "bar"]
+console.log(mapIter.next().value); // [Object, "baz"]
+</pre>
+
+<h3 id="Einsatz_von_iterator()_mit_for..of">Einsatz von <code>[@@iterator]()</code> mit <code>for..of</code></h3>
+
+<pre class="brush: js">const myMap = new Map();
+myMap.set('0', 'foo');
+myMap.set(1, 'bar');
+myMap.set({}, 'baz');
+
+for (const entry of myMap) {
+ console.log(entry);
+}
+// ["0", "foo"]
+// [1, "bar"]
+// [{}, "baz"]
+
+for (const [key, value] of myMap) {
+ console.log(`${key}: ${value}`);
+}
+// 0: foo
+// 1: bar
+// [Object]: baz
+</pre>
+
+<h2 id="Spezifikationen">Spezifikationen</h2>
+
+<table class="standard-table">
+ <tbody>
+ <tr>
+ <th scope="col">Spezifikation</th>
+ <th scope="col">Status</th>
+ <th scope="col">Kommentar</th>
+ </tr>
+ <tr>
+ <td>{{SpecName('ES2015', '#sec-map.prototype-@@iterator', 'Map.prototype[@@iterator]()')}}</td>
+ <td>{{Spec2('ES2015')}}</td>
+ <td>Initiale Definition.</td>
+ </tr>
+ <tr>
+ <td>{{SpecName('ESDraft', '#sec-map.prototype-@@iterator', 'Map.prototype[@@iterator]()')}}</td>
+ <td>{{Spec2('ESDraft')}}</td>
+ <td> </td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="Browserkompatibilität">Browserkompatibilität</h2>
+
+
+
+<p>{{Compat("javascript.builtins.Map.@@iterator")}}</p>
+
+<h2 id="Siehe_auch">Siehe auch</h2>
+
+<ul>
+ <li>{{jsxref("Map.prototype.entries()")}}</li>
+ <li>{{jsxref("Map.prototype.keys()")}}</li>
+ <li>{{jsxref("Map.prototype.values()")}}</li>
+</ul>