非标
此特征是非标准的，且不在标准轨道中。不要在面向 Web 的生产站点中使用它：它不适用于每个用户。实现之间可能存在大的不兼容性，且行为将来可能改变。
弃用
This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the
兼容性表格
at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
KeyboardEvent.initKeyEvent()
method is used to initialize the value of an event created using
document.createEvent
("KeyboardEvent")
. Events initialized in this way must have been created with the
document.createEvent
("KeyboardEvent")
方法。
initKeyEvent()
must be called to set the event before it is
dispatched
.
Do not use this method anymore, use the
KeyboardEvent()
constructor instead.
This method is based on early drafts of
DOM (文档对象模型) 2 级事件规范
and is implemented in Gecko-based browsers; other browsers implemented
KeyboardEvent.initKeyboardEvent
based on early drafts of
DOM (文档对象模型) 3 级事件规范
. Favor the modern constructor structure as the only cross-browser way of building events.
event.initKeyEvent (type, bubbles, cancelable, viewArg,
ctrlKeyArg, altKeyArg, shiftKeyArg, metaKeyArg,
keyCodeArg, charCodeArg)
type
DOMString
representing the type of event.
bubbles
布尔
indicating whether the event should bubble up through the event chain or not (see
bubbles
).
cancelable
布尔
i indicating whether the event can be canceled (see
cancelable
).
viewArg
UIEvent.view
; this value may be
null
.
ctrlKeyArg
布尔
也就是
true
if the virtual key to be generated is a combination of keys containing the
Ctrl
key.
altKeyArg
布尔
也就是
true
if the virtual key to be generated is a combination of keys containing the
Alt
key.
shiftKeyArg
布尔
也就是
true
if the virtual key to be generated is a combination of keys containing the
Shift
key.
metaKeyArg
布尔
也就是
true
if the virtual key to be generated is a combination of keys containing the
Meta
key.
keyCodeArg
unsigned long
representing the virtual key code value of the key which was depressed, otherwise
0
。见
KeyboardEvent.keyCode
for the list of key codes.
charCodeArg
unsigned long
representingthe Unicode character associated with the depressed key otherwise
0
.
var event = document.createEvent('KeyboardEvent'); // create a key event
// define the event
event.initKeyEvent("keypress", // typeArg,
true, // canBubbleArg,
true, // cancelableArg,
null, // viewArg, Specifies UIEvent.view. This value may be null.
false, // ctrlKeyArg,
false, // altKeyArg,
false, // shiftKeyArg,
false, // metaKeyArg,
9, // keyCodeArg,
0); // charCodeArg);
document.getElementById('blah').dispatchEvent(event);
This implementation of keyboard events is based on the key events spec in the early versions of DOM 2 Events , later removed from that spec.
initKeyEvent
is the current Gecko equivalent of the DOM Level 3 Events (initially drafted and also deprecated in favor of
KeyboardEvent()
Keyboard.initKeyboardEvent()
method with the following arguments :
typeArg of type DOMString canBubbleArg of type boolean cancelableArg of type boolean viewArg of type views::AbstractView keyIdentifierArg of type DOMString keyLocationArg of type unsigned long modifiersList of type DOMString);
KeyboardEvent
getModifierState()
initKeyboardEvent()
initKeyEvent()