weakMap.set
weakMap.set
set()方法根据指定的key和value在WeakMap对象中添加新/更新元素。
语法
wm.set(key, value
参数
key必须的。是要在WeakMap对象中添加/更新元素的key部分。value必须的。是要在WeakMap对象中添加/更新元素的value部分。
返回值
该WeakMap对象
示例
使用set方法
var wm = new WeakMap(
var obj = {};
// Add new elements to the WeakMap
wm.set(obj, 'foo').set(window, 'bar' // chainable
// Update an element in the WeakMap
wm.set(obj, 'baz'
规范
| Specification | Status | Comment |
|---|---|---|
| ECMAScript 2015 (6th Edition, ECMA-262)The definition of 'WeakMap.prototype.set' in that specification. | Standard | Initial definition. |
| ECMAScript Latest Draft (ECMA-262)The definition of 'WeakMap.prototype.set' in that specification. | Draft | |
浏览器兼容性
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | 36 | (Yes) | 6.0 (6.0) | 11 | 23 | 7.1 |
| Feature | Android | Edge | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | No support | (Yes) | 6.0 (6.0) | No support | No support | 8 |
