Keyboard - Web API 接口参考 编辑

这是一个实验中的功能
此功能某些浏览器尚在开发中，请参考浏览器兼容性表格以得到在不同浏览器中适合使用的前缀。由于该功能对应的标准文档可能被重新修订，所以在未来版本的浏览器中该功能的语法和行为可能随之改变。

The Keyboard interface of the the Keyboard API provides functions that retrieve keyboard layout maps and toggle capturing of key presses from the physical keyboard.

A list of valid code values is found in the UI Events KeyboardEvent code Values spec.

Properties

None.

Methods

Keyboard.getLayoutMap() 

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

Keyboard.lock() 

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

Keyboard.unlock() 

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

Example

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.
}

Specifications

Specification	Status	Comment
Keyboard Map Keyboard	Editor's Draft	Initial definition.
Keyboard Lock Keyboard	Editor's Draft	Adds lock() and unlock().

Browser compatibility

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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.