learning$js

.has()

PrevNext
Term side of the Card
Topic: Map
Unit title: .has()
Categories: Method
Explanation side of the Card

Explanation: The method that checks if a specific key exists in a `Map` object. It returns `true` if the key is found or `false` otherwise.

Browser compatibility:
  • The chrome browser supports this feature starting from version 38
  • The edge browser supports this feature starting from version 12
  • The firefox browser supports this feature starting from version 13
  • The safari browser supports this feature starting from version 8
Availability: