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.
Syntax
var aBoolean = KeyboardLayoutMap.has(key)
Parameters
- key
- The key of an element to search for in the map.
Return value
A Boolean
indicating whether the specifed key was found.
Example
Specification | Status | Comment |
---|---|---|
Keyboard Map The definition of 'has()' in that specification. |
Editor's Draft | Initial definition. |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
has | Chrome Full support 69 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 56 | Safari No support No | WebView Android No support No | Chrome Android No support No | Firefox Android No support No | Opera Android Full support 48 | Safari iOS No support No | Samsung Internet Android No support No |
Legend
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.