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KeyboardLayoutMap: keys() method

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

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

The keys() method of the KeyboardLayoutMap interface returns a new Iterator object that contains the keys for each index in the KeyboardLayoutMap object.

The method is otherwise the same as Map.prototype.keys().

Syntax

keys()

Parameters

None.

Return value

A new Iterator object.

Examples

The following example iterates every keyboard code on an English QWERTY keyboard.

navigator.keyboard.getLayoutMap().then((keyboardLayoutMap) => {
  for (const code of keyboardLayoutMap.keys()) {
    console.log(`${code} keyboard code`);
  }
});

Specifications

Specification
ECMAScript® 2026 Language Specification> # sec-map.prototype.keys>

Browser compatibility

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet	WebView Android	WebView on iOS
`keys`	69	79	No	56	No	69	No	48	No	10.0	69	No