The Map[@@toStringTag] property has an initial value of "Map".
Property attributes of Map.prototype[@@toStringTag]
| |
|---|---|
| Writable | no |
| Enumerable | no |
| Configurable | yes |
Map[Symbol.toStringTag]
Object.prototype.toString.call(new Map()) // "[object Map]"
| Specification | Status | Comment |
|---|---|---|
| ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'Map.prototype[@@toStringTag]' in that specification. | Standard | Initial definition. |
| ECMAScript Latest Draft (ECMA-262) The definition of 'Map.prototype[@@toStringTag]' in that specification. | Draft |
| Desktop | ||||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
| Basic support | 44 | No | No | No | No | No |
| Mobile | |||||||
|---|---|---|---|---|---|---|---|
| Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | 44 | 44 | No | No | No | No | 4.0 |
| Server | |
|---|---|
| Node.js | |
| Basic support | No |
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/@@toStringTag