Keyboard

None.

Keyboard.getLayoutMap() (en-US) 实验性

Returns a Promise that resolves with an instance of KeyboardLayoutMap (en-US) which is a map-like object with functions for retrieving the strings associated with specific physical keys.

Keyboard.lock() (en-US) 实验性

Returns a Promise after enabling the capture of keypresses for any or all of the keys on the physical keyboard.

Keyboard.unlock() (en-US) 实验性

Unlocks all keys captured by the lock() method and returns synchronously.

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

if (navigator.keyboard) {
  var keyboard = navigator.keyboard;
  keyboard.getLayoutMap()
  .then(keyboardLayoutMap => {
    var upKey = keyboardLayoutMap.get('KeyW');
    window.alert('Press ' + upKey + ' to move up.');
  });
} else {
  // Do something else.
}