WeakSet.prototype

Summary

The WeakSet.prototype property represents the prototype for the WeakSet constructor.

WeakSet.prototype 属性的属性特性：
writable false
enumerable false
configurable false

Description

WeakSet.prototype. You can use the constructor's prototype object to add properties or methods to all WeakSet instances.

Properties

WeakSet.prototype.constructor
返回构造函数即 WeakSet 本身.

Methods

WeakSet.prototype.add(value)
 在 该  WeakSet  对象中添加一个新元素 value.
WeakSet.prototype.delete(value)
从 该  WeakSet  对象中删除   value  这个元素, 之后  WeakSet.prototype.has(value)  方法便会返回 false .
WeakSet.prototype.has(value)
返回一个布尔值,  表示给定的值 value 是否存在于这个  WeakSet 中.

Specifications

Specification Status Comment
ECMAScript 2015 (6th Edition, ECMA-262)
WeakSet.prototype		 Standard Initial definition.

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!
Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) 未实现 bug 792439 未实现 未实现 未实现
Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support 未实现 未实现 bug 792439 未实现 未实现 未实现

Chrome-specific notes

  • This feature is available behind a preference. In chrome://flags, activate the entry “Enable Experimental JavaScript”.

See also

  1. JavaScript 标准库
  2. WeakSet
  3. 属性
    1. WeakSet.prototype
  4. 方法
    1. WeakSet.prototype.add()
    2. WeakSet.prototype.clear()
    3. WeakSet.prototype.delete()
    4. WeakSet.prototype.has()
  5. 继承
  6. Function
  7. 属性
    1. Function.arguments
    2. Function.arity
    3. Function.caller
    4. Function.displayName
    5. Function.length
    6. Function.name
    7. Function.prototype
  8. 方法
    1. Function.prototype.apply()
    2. Function.prototype.bind()
    3. Function.prototype.call()
    4. Function.prototype.isGenerator()
    5. Function.prototype.toSource()
    6. Function.prototype.toString()
  9. Object
  10. 属性
    1. Object.prototype.__count__
    2. Object.prototype.__noSuchMethod__
    3. Object.prototype.__parent__
    4. Object.prototype.__proto__
    5. Object.prototype.constructor
  11. 方法
    1. Object.prototype.__defineGetter__()
    2. Object.prototype.__defineSetter__()
    3. Object.prototype.__lookupGetter__()
    4. Object.prototype.__lookupSetter__()
    5. Object.prototype.hasOwnProperty()
    6. Object.prototype.isPrototypeOf()
    7. Object.prototype.propertyIsEnumerable()
    8. Object.prototype.toLocaleString()
    9. Object.prototype.toSource()
    10. Object.prototype.toString()
    11. Object.prototype.unwatch()
    12. Object.prototype.valueOf()
    13. Object.prototype.watch()
    14. Object.setPrototypeOf()