From 52ccdf1f0a1cee3f0659ac78e81c79dae152399b Mon Sep 17 00:00:00 2001 From: MDN Date: Wed, 23 Jun 2021 00:34:06 +0000 Subject: [CRON] sync translated content --- .../reference/global_objects/map/has/index.html | 120 --------------------- 1 file changed, 120 deletions(-) delete mode 100644 files/zh-cn/web/javascript/reference/global_objects/map/has/index.html (limited to 'files/zh-cn/web/javascript/reference/global_objects/map/has') 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 73eb4550d0..0000000000 --- a/files/zh-cn/web/javascript/reference/global_objects/map/has/index.html +++ /dev/null @@ -1,120 +0,0 @@ ---- -title: Map.prototype.has() -slug: Web/JavaScript/Reference/Global_Objects/Map/has -tags: - - ECMAScript 2015 - - JavaScript - - Map - - Method - - Reference -translation_of: Web/JavaScript/Reference/Global_Objects/Map/has ---- -
{{JSRef}}
- -

方法has() 返回一个bool值,用来表明map 中是否存在指定元素.

- -

语法

- -
myMap.has(key);
- -

参数

- -
-
key
-
必填. 用来检测是否存在指定元素的键值.
-
- -

返回值

- -
-
Boolean
-
如果指定元素存在于Map中,则返回true。其他情况返回false
-
- -

案例

- -

使用has方法

- -
var myMap = new Map();
-myMap.set("bar", "foo");
-
-myMap.has("bar");  // returns true
-myMap.has("baz");  // returns false
-
- -

规范列表

- - - - - - - - - - - - - - -
规范名称StatusComment
{{SpecName('ES6', '#sec-map.prototype.has', 'Map.prototype.has')}}{{Spec2('ES6')}}Initial definition.
- -

浏览器兼容性

- -

{{CompatibilityTable}}

- -
- - - - - - - - - - - - - - - - - - - -
浏览器Chrome谷歌Firefox (Gecko)火狐Internet ExplorerOperaSafari
兼容版本38{{CompatGeckoDesktop("13.0")}}11257.1
-
- -
- - - - - - - - - - - - - - - - - - - - - -
浏览器AndroidChrome for AndroidFirefox Mobile (Gecko)IE MobileOpera MobileSafari Mobile
兼容版本{{CompatNo}}38{{CompatGeckoMobile("13.0")}}{{CompatNo}}{{CompatNo}}8
-
- -

相关链接

- - -- cgit v1.2.3-54-g00ecf