map.@@toStringTag
Map[@@toStringTag]的初始值是"Map".
| Map.prototype[@@toStringTag]属性的属性特性 |
|:----|
| Writable | no |
| Enumerable | no |
| Configurable | yes |
语法
Map[Symbol.toStringTag]示例
Object.prototype.toString.call(new Map()) // "[object Map]"规范
Specification | Status | Comment |
|---|---|---|
ECMAScript 2015 (6th Edition, ECMA-262)The definition of 'Map.prototype@@toStringTag' in that specification. | Standard | Initial definition. |
ECMAScript 2017 Draft (ECMA-262)The definition of 'Map.prototype@@toStringTag' in that specification. | Draft | ? |
浏览器兼容性
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
Basic support | 44.0 | No support | No support | No support | No support |
Feature | Android | Android Webview | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile | Chrome for Android |
|---|---|---|---|---|---|---|---|
Basic support | No support | 44.0 | No support | No support | No support | No support | 44.0 |
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