KeyboardEvent.location
read-only property returns an
unsigned long
representing the location of the key on the keyboard or other input device.
Possible values are:
| 常量 | 值 | 描述 |
DOM_KEY_LOCATION_STANDARD
|
0 | The key has only one version, or can't be distinguished between the left and right versions of the key, and was not pressed on the numeric keypad or a key that is considered to be part of the keypad. |
DOM_KEY_LOCATION_LEFT
|
1 | The key was the left-hand version of the key; for example, the left-hand Control key was pressed on a standard 101 key US keyboard. This value is only used for keys that have more than one possible location on the keyboard. |
DOM_KEY_LOCATION_RIGHT
|
2 | The key was the right-hand version of the key; for example, the right-hand Control key is pressed on a standard 101 key US keyboard. This value is only used for keys that have more than one possible location on the keyboard. |
DOM_KEY_LOCATION_NUMPAD
|
3 |
The key was on the numeric keypad, or has a virtual key code that corresponds to the numeric keypad. 注意： 当 NumLock is locked, Gecko always returns
DOM_KEY_LOCATION_NUMPAD
for the keys on the numeric pad. Otherwise, when
NumLock
is unlocked and the keyboard actually has a numeric keypad, Gecko always returns
DOM_KEY_LOCATION_NUMPAD
too. On the other hand, if the keyboard doesn't have a keypad, such as on a notebook computer, some keys become Numpad only when NumLock is locked. When such keys fires key events, the location attribute value depends on the key. That is, it must not be
DOM_KEY_LOCATION_NUMPAD
.
注意：
NumLock
key's key events indicate
DOM_KEY_LOCATION_STANDARD
both on Gecko and Internet Explorer.
|
DOM_KEY_LOCATION_MOBILE
Obsolete since Gecko 38
|
4 |
The key was on a mobile device; this can be on either a physical keypad or a virtual keyboard. 注意： Gecko always returns
DOM_KEY_LOCATION_MOBILE
on Android (Prior to 18), Maemo, and
Boot to Gecko
. However, at
Gecko 38
, this is dropped.
|
DOM_KEY_LOCATION_JOYSTICK
Obsolete since Gecko 38
|
5 |
The key was a button on a game controller or a joystick on a mobile device. 注意： Gecko never fires trusted key events with
DOM_KEY_LOCATION_JOYSTICK
except on Android. Starting 18, native key events on Android may have this value. However, at
Gecko 38
, this is dropped.
|
var location = event.location;
function keyEvent(event) {
console.log("Location of key pressed: " + event.location);
}
| 规范 | 状态 | 注释 |
|---|---|---|
|
DOM (文档对象模型) 3 级事件规范
The definition of 'KeyboardEvent.location' in that specification. |
过时 | 初始定义。 |
| 桌面 | 移动 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
location
|
Chrome Yes | Edge 12 | Firefox 15 | IE 9 | Opera Yes | Safari 6.1 | WebView Android Yes | Chrome Android Yes | Firefox Android 15 | Opera Android Yes | Safari iOS 8 | Samsung Internet Android Yes |
完整支持