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| author | Peter Bengtsson <mail@peterbe.com> | 2021-07-16 16:27:00 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-07-17 04:27:00 +0800 |
| commit | b9afb23d12dcae1e09f8d04c72143c5ddaa34aea (patch) | |
| tree | f6c20844119bcaf0131ad4a037e0245577927f2c /files/zh-cn/web/javascript/reference/global_objects/map/@@iterator | |
| parent | 1aa671566c3a990ec2df9a46137471d624b6f7ff (diff) | |
| download | translated-content-b9afb23d12dcae1e09f8d04c72143c5ddaa34aea.tar.gz translated-content-b9afb23d12dcae1e09f8d04c72143c5ddaa34aea.tar.bz2 translated-content-b9afb23d12dcae1e09f8d04c72143c5ddaa34aea.zip | |
delete conflicting/orphaned docs (zh-CN) (#1412)
* delete conflicting docs (zh-CN)
* and redirects
* do orphaned as well
* fix
* remove more orphans
* revert orphaned docs that can identify origin
* move orphaned docs to current loc
* adjust slug path
* fix redirect change from rebase
Co-authored-by: Irvin <irvinfly@gmail.com>
Diffstat (limited to 'files/zh-cn/web/javascript/reference/global_objects/map/@@iterator')
| -rw-r--r-- | files/zh-cn/web/javascript/reference/global_objects/map/@@iterator/index.html | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/files/zh-cn/web/javascript/reference/global_objects/map/@@iterator/index.html b/files/zh-cn/web/javascript/reference/global_objects/map/@@iterator/index.html new file mode 100644 index 0000000000..ea20d6b87e --- /dev/null +++ b/files/zh-cn/web/javascript/reference/global_objects/map/@@iterator/index.html @@ -0,0 +1,103 @@ +--- +title: Map.prototype[@@iterator]() +slug: Web/JavaScript/Reference/Global_Objects/Map/@@iterator +translation_of: Web/JavaScript/Reference/Global_Objects/Map/@@iterator +tags: + - ECMAScript 2015 + - Iterator + - JavaScript + - Map + - Method + - Prototype + - Reference +browser-compat: javascript.builtins.Map.@@iterator +--- +<div>{{JSRef}}</div> + +<p><code><strong>@@iterator</strong></code><strong> </strong>属性的初始值与 {{jsxref("Map.prototype.entries()", "entries")}} 属性的初始值是同一个函数对象。</p> + +<div>{{EmbedInteractiveExample("pages/js/map-prototype-@@iterator.html")}}</div> + + + +<h2 id="语法">语法</h2> + +<pre class="syntaxbox"><code><em>myMap</em>[Symbol.iterator]</code></pre> + +<h3 id="返回值">返回值</h3> + +<p>map 的 <strong>iterator</strong> 函数默认就是 {{jsxref("Map.prototype.entries()", "entries()")}} 函数。</p> + +<h2 id="示例">示例</h2> + +<h3 id="使用_iterator()">使用 <code>[@@iterator]()</code></h3> + +<pre class="brush:js">var myMap = new Map(); +myMap.set('0', 'foo'); +myMap.set(1, 'bar'); +myMap.set({}, 'baz'); + +var mapIter = myMap[Symbol.iterator](); +//返回的其实是个generator +console.log(mapIter.next().value); // ["0", "foo"] +console.log(mapIter.next().value); // [1, "bar"] +console.log(mapIter.next().value); // [Object, "baz"] +</pre> + +<h3 id="在for..of中使用iterator()">在<code>for..of中</code>使用<code>[@@iterator]()</code> </h3> + +<pre class="brush:js">var 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 (var v of myMap) { + console.log(v); +} + +// 0: foo +// 1: bar +// [Object]: baz</pre> + +<h2 id="规范">规范</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', '#sec-map.prototype-@@iterator', 'Map.prototype[@@iterator]()')}}</td> + <td>{{Spec2('ES2015')}}</td> + <td>Initial 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="浏览器兼容">浏览器兼容</h2> + + + +<p>{{Compat("javascript.builtins.Map.@@iterator")}}</p> + +<h2 id="另见">另见</h2> + +<ul> + <li>{{jsxref("Map.prototype.entries()")}}</li> + <li>{{jsxref("Map.prototype.keys()")}}</li> + <li>{{jsxref("Map.prototype.values()")}}</li> +</ul> |
