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.
js
has(key)
keyThe key of an element to search for in the map.
A Boolean indicating whether the specified key was 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.
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| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
has |
69 | 79 | No | No | 56 | No | 69 | 69 | No | 48 | No | 10.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/KeyboardLayoutMap/has