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author | Peter Bengtsson <mail@peterbe.com> | 2021-07-23 11:05:59 -0400 |
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committer | GitHub <noreply@github.com> | 2021-07-23 11:05:59 -0400 |
commit | 8079aacdb9fd11d5eebcf16a7d7e0f5a31466cf2 (patch) | |
tree | 959e30f9fc8d0855690494eb85ba8196ea347668 /files/zh-cn/web/javascript/reference/global_objects/map/clear | |
parent | a8b2d80e4c706f5fc6209b267f2bcc5bc89cb6d3 (diff) | |
download | translated-content-8079aacdb9fd11d5eebcf16a7d7e0f5a31466cf2.tar.gz translated-content-8079aacdb9fd11d5eebcf16a7d7e0f5a31466cf2.tar.bz2 translated-content-8079aacdb9fd11d5eebcf16a7d7e0f5a31466cf2.zip |
wasn't supposed to be orphaned (zh-cn) (#1674)
* wasn't supposed to be orphaned (zh-cn)
* fix redirects
* fix slug front-matter
Diffstat (limited to 'files/zh-cn/web/javascript/reference/global_objects/map/clear')
-rw-r--r-- | files/zh-cn/web/javascript/reference/global_objects/map/clear/index.html | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/files/zh-cn/web/javascript/reference/global_objects/map/clear/index.html b/files/zh-cn/web/javascript/reference/global_objects/map/clear/index.html new file mode 100644 index 0000000000..a83f6d78bb --- /dev/null +++ b/files/zh-cn/web/javascript/reference/global_objects/map/clear/index.html @@ -0,0 +1,81 @@ +--- +title: Map.prototype.clear() +slug: Web/JavaScript/Reference/Global_Objects/Map/clear +tags: + - ECMAScript 2015 + - JavaScript + - Map + - Method + - Prototype + - Reference +translation_of: Web/JavaScript/Reference/Global_Objects/Map/clear +original_slug: Web/JavaScript/Reference/Global_Objects/Map/clear +browser-compat: javascript.builtins.Map.clear +--- +<div>{{JSRef}}</div> + +<p><code>clear()</code>方法会移除Map对象中的所有元素。</p> + +<div>{{EmbedInteractiveExample("pages/js/map-prototype-clear.html")}}</div> + + + +<h2 id="语法">语法</h2> + +<pre class="syntaxbox"><code><em>myMap</em>.clear();</code> +</pre> + +<h3 id="返回值">返回值</h3> + +<p>{{jsxref("undefined")}}.</p> + +<h2 id="示例">示例</h2> + +<h3 id="调用clear方法">调用<code>clear</code>方法</h3> + +<pre class="brush: js">var myMap = new Map(); +myMap.set("bar", "baz"); +myMap.set(1, "foo"); + +myMap.size; // 2 +myMap.has("bar"); // true + +myMap.clear(); + +myMap.size; // 0 +myMap.has("bar") // false +</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.clear', 'Map.prototype.clear')}}</td> + <td>{{Spec2('ES2015')}}</td> + <td>Initial definition.</td> + </tr> + <tr> + <td>{{SpecName('ESDraft', '#sec-map.prototype.clear', 'Map.prototype.clear')}}</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.clear")}}</p> + +<h2 id="相关链接">相关链接</h2> + +<ul> + <li>{{jsxref("Map")}}</li> +</ul> |