KeyboardLayoutMap

Limited availability

The KeyboardLayoutMap interface of the Keyboard API is a read-only object with functions for retrieving the string associated with specific physical keys.

A KeyboardLayoutMap instance is a read-only Map-like object, in which each key is a string identifying the unique physical key on the keyboard (a “key code”), and the corresponding value is the associated key attribute value (which may be affected by the keyboard layout, and so on).

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

Instance properties

• size Read only Experimental
  • : Returns the number of elements in the KeyboardLayoutMap object.

Instance methods

• KeyboardLayoutMap[Symbol.iterator]() Experimental
  • : Returns a new Iterator object that contains the key/value pairs.
• entries() Experimental
  • : Returns a new Iterator object that contains the key/value pairs.
• forEach() Experimental
  • : Executes a provided function once for each element of KeyboardLayoutMap.
• get() Experimental
  • : Returns the element with the given key from the KeyboardLayoutMap object.
• has() Experimental
  • : Returns a boolean indicating whether the KeyboardLayoutMap object has an element with the specified key.
• keys() Experimental
  • : Returns a new Iterator object that contains the keys for each index in the KeyboardLayoutMap object.
• values() Experimental
  • : Returns a new Iterator object that contains the values for each index in the KeyboardLayoutMap object.

Examples

The following example demonstrates how to get the location- or layout-specific string associated with the keyboard code that corresponds to the ‘W’ key on an English QWERTY keyboard.

navigator.keyboard.getLayoutMap().then((keyboardLayoutMap) => {
  const upKey = keyboardLayoutMap.get("KeyW");
  window.alert(`Press ${upKey} to move up.`);
});

Specifications

Browser compatibility