Widely Available
Maps
id: map
Map (initial support)
Map objects hold key-value pairs and remember the original insertion order of the keys.
Baseline Status:
Achieved Widely Available on Jan 29, 2018 (Cross-browser Newly Available since Jul 29, 2015).
Desktop Browser Engine Support
Google Chrome
38
Supported
Mozilla Firefox
13
Supported
Apple Safari
8
Supported
Microsoft Edge
12
Supported
Mobile Browser Engine Support
Chrome Android
38
Firefox Android
14
Safari iOS
8
Specifications and References
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Feature XML ↗
MDN Browser Compat Data Keys:
javascript.builtins.Map ↗
javascript.builtins.Map.@@iterator ↗
javascript.builtins.Map.@@species ↗
javascript.builtins.Map.Map ↗
javascript.builtins.Map.Map.iterable_allowed ↗
javascript.builtins.Map.Map.null_allowed ↗
javascript.builtins.Map.clear ↗
javascript.builtins.Map.delete ↗
javascript.builtins.Map.entries ↗
javascript.builtins.Map.forEach ↗
javascript.builtins.Map.get ↗
javascript.builtins.Map.has ↗
javascript.builtins.Map.key_equality_for_zeros ↗
javascript.builtins.Map.keys ↗
javascript.builtins.Map.set ↗
javascript.builtins.Map.size ↗
javascript.builtins.Map.values ↗