Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The has() method of the KeyboardLayoutMap interface returns a boolean indicating whether the object has an element with the specified key.

A list of valid keys is found in the UI Events KeyboardEvent code Values spec.





The key of an element to search for in the map.

Return value

A Boolean indicating whether the specified key was found.


No specification found

No specification data found for api.KeyboardLayoutMap.has.
Check for problems with this page or contribute a missing spec_url to mdn/browser-compat-data. Also make sure the specification is included in w3c/browser-specs.

Browser compatibility

BCD tables only load in the browser