weakSet.delete

delete()方法从WeakSet 对象中移除指定的元素。

语法

ws.delete(value

参数

value必须。从 WeakSet对象中移除的对象。

返回值

如果在WeakSet 对象中成功移除元素则返回 true。如果 key 没有在 WeakSet 中找到或者 key 不是一个对象，则返回 false。

示例

使用delete方法

var ws = new WeakSet(
var obj = {};

ws.add(window

ws.delete(obj    // Returns false. No obj found to be deleted.
ws.delete(window // Returns true.  Successfully removed.

ws.has(window    // Returns false. The window is no longer present in the WeakSet.

规范

Specification	Status	Comment
ECMAScript 2015 (6th Edition, ECMA-262)The definition of 'WeakSet.prototype.delete' in that specification.	Standard	Initial definition.
ECMAScript Latest Draft (ECMA-262)The definition of 'WeakSet.prototype.delete' in that specification.	Draft

浏览器兼容性

Feature	Chrome	Edge	Firefox (Gecko)	Internet Explorer	Opera	Safari
Basic support	36	(Yes)	34 (34)	No support	23	No support

Feature	Android	Edge	Firefox Mobile (Gecko)	IE Mobile	Opera Mobile	Safari Mobile
Basic support	No support	(Yes)	34.0 (34)	No support	No support	No support