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The Map[@@toStringTag] property has an initial value of "Map".

Property attributes of Map.prototype[@@toStringTag]
Writable no
Enumerable no
Configurable yes




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.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support44 No No No No No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support4444 No No No No ?

Document Tags and Contributors

 Contributors to this page: wbamberg, fscholz, kdex, arai, nb1080, marcionitao, jpmedley
 Last updated by: wbamberg,