Web platform features explorer

Map (initial support)

Widely available since 2018-01-29
Tags: javascript Groups: JavaScript > Collections > Maps

Map objects hold key-value pairs and remember the original insertion order of the keys.

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Browser support

  • Chrome 38 Released on 2014-10-07
  • Chrome Android 38 Released on 2014-10-08
  • Edge 12 Released on 2015-07-29
  • Firefox 13 Released on 2012-06-05
  • Firefox for Android 14 Released on 2012-06-26
  • Safari 8 Released on 2014-10-16
  • Safari on iOS 8 Released on 2014-09-17