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| author | MDN <actions@users.noreply.github.com> | 2021-07-17 00:35:32 +0000 |
|---|---|---|
| committer | MDN <actions@users.noreply.github.com> | 2021-07-17 00:35:32 +0000 |
| commit | 7267c8c97a1e4d170a0a68e34bc0b3e029f465c7 (patch) | |
| tree | 29aa504788a86f837520d06e7e5cfab33aeacf3d /files/zh-cn/web/javascript/reference/global_objects/map/has | |
| parent | a53bff5bca8db992fdf2ac0c68a82e7a1a53ab7e (diff) | |
| download | translated-content-7267c8c97a1e4d170a0a68e34bc0b3e029f465c7.tar.gz translated-content-7267c8c97a1e4d170a0a68e34bc0b3e029f465c7.tar.bz2 translated-content-7267c8c97a1e4d170a0a68e34bc0b3e029f465c7.zip | |
[CRON] sync translated content
Diffstat (limited to 'files/zh-cn/web/javascript/reference/global_objects/map/has')
| -rw-r--r-- | files/zh-cn/web/javascript/reference/global_objects/map/has/index.html | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/files/zh-cn/web/javascript/reference/global_objects/map/has/index.html b/files/zh-cn/web/javascript/reference/global_objects/map/has/index.html deleted file mode 100644 index 05ebad0ea0..0000000000 --- a/files/zh-cn/web/javascript/reference/global_objects/map/has/index.html +++ /dev/null @@ -1,122 +0,0 @@ ---- -title: Map.prototype.has() -slug: Web/JavaScript/Reference/Global_Objects/Map/has -translation_of: Web/JavaScript/Reference/Global_Objects/Map/has -tags: - - ECMAScript 2015 - - JavaScript - - Map - - Method - - Prototype - - Reference -browser-compat: javascript.builtins.Map.has ---- -<div>{{JSRef}}</div> - -<p>方法<code><strong>has()</strong></code> 返回一个bool值,用来表明map 中是否存在指定元素.</p> - -<h2 id="语法">语法</h2> - -<pre class="syntaxbox"><code><em>myMap</em>.has(key);</code></pre> - -<h3 id="参数">参数</h3> - -<dl> - <dt>key</dt> - <dd>必填. 用来检测是否存在指定元素的键值.</dd> -</dl> - -<h3 id="返回值">返回值</h3> - -<dl> - <dt>Boolean</dt> - <dd>如果指定元素存在于Map中,则返回true。其他情况返回false</dd> -</dl> - -<h2 id="案例">案例</h2> - -<h3 id="使用has方法">使用has方法</h3> - -<pre class="brush: js">var myMap = new Map(); -myMap.set("bar", "foo"); - -myMap.has("bar"); // returns true -myMap.has("baz"); // returns false -</pre> - -<h2 id="规范列表">规范列表</h2> - -<table class="standard-table"> - <tbody> - <tr> - <th scope="col">规范名称</th> - <th scope="col">Status</th> - <th scope="col">Comment</th> - </tr> - <tr> - <td>{{SpecName('ES6', '#sec-map.prototype.has', 'Map.prototype.has')}}</td> - <td>{{Spec2('ES6')}}</td> - <td>Initial definition.</td> - </tr> - </tbody> -</table> - -<h2 id="浏览器兼容性">浏览器兼容性</h2> - -<p>{{CompatibilityTable}}</p> - -<div id="compat-desktop"> -<table class="compat-table"> - <tbody> - <tr> - <th>浏览器</th> - <th>Chrome谷歌</th> - <th>Firefox (Gecko)火狐</th> - <th>Internet Explorer</th> - <th>Opera</th> - <th>Safari</th> - </tr> - <tr> - <td>兼容版本</td> - <td>38</td> - <td>{{CompatGeckoDesktop("13.0")}}</td> - <td>11</td> - <td>25</td> - <td>7.1</td> - </tr> - </tbody> -</table> -</div> - -<div id="compat-mobile"> -<table class="compat-table"> - <tbody> - <tr> - <th>浏览器</th> - <th>Android</th> - <th>Chrome for Android</th> - <th>Firefox Mobile (Gecko)</th> - <th>IE Mobile</th> - <th>Opera Mobile</th> - <th>Safari Mobile</th> - </tr> - <tr> - <td>兼容版本</td> - <td>{{CompatNo}}</td> - <td>38</td> - <td>{{CompatGeckoMobile("13.0")}}</td> - <td>{{CompatNo}}</td> - <td>{{CompatNo}}</td> - <td>8</td> - </tr> - </tbody> -</table> -</div> - -<h2 id="相关链接">相关链接</h2> - -<ul> - <li>{{jsxref("Map")}}</li> - <li>{{jsxref("Map.prototype.set()")}}</li> - <li>{{jsxref("Map.prototype.get()")}}</li> -</ul> |
