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Altkey, Button, cancelbubble, ClientX, ClientY, Ctrlkey, Fromelement, KeyCode, OffsetX, OffsetY, PropertyName, Returnvalu E, ScreenX,
ScreenY, Shiftkey, srcelement, Srcfilter, toelement, type, x, y
1.altKey Description: Check the status of the ALT key.
Syntax: Event.altkey
Possible value: TRUE If the ALT key is pressed, or FALSE. Read-only.
2.button Description: Check the pressed mouse button.
Syntax: Event.button
Possible values: 0 no keys 1 Press left 2 press right key 3 press about Key 4 Press middle Key 5 press left and middle Key 6 press right key and middle Key 7 press all keys
This property is used only for onmousedown, onmouseup, and onmousemove events. For other events, returns 0 (such as onclick), regardless of mouse state.
3.cancelBubble Description: Detects whether to accept control of events for upper-level elements.
Grammar: event.cancelbubble[= cancelbubble]
Possible value: This is a read-write Boolean value:
TRUE is not controlled by the events of the upper element. FALSE allows to be controlled by the events of the upper element. This is the default value.
Example: The following code fragment shows the SHOWSRC () function that is raised by the event onclick on the upper element (body) If the SHIFT key is also pressed when clicked (onclick) on the picture.
<script type= "Text/javascript" >
function Checkcancel () ... {
if (window.event.shiftKey)
window.event.cancelBubble = true;
}
function Showsrc () ... {
if (window.event.srcElement.tagName = "IMG")
alert (WINDOW.EVENT.SRCELEMENT.SRC);
}
</SCRIPT>
<body onclick= "showsrc ()" >
4.clientX Description: Returns the x-coordinate of the mouse in the client area of the window.
Syntax: Event.clientx
Note: This is a read-only property. This means that you can only get the current position of the mouse through it, but you cannot use it to change the position of the mouse.
5.clientY Description: Returns the y-coordinate of the mouse in the client area of the window.
Syntax: Event.clienty
Note: This is a read-only property. This means that you can only get the current position of the mouse through it, but you cannot use it to change the position of the mouse.
6.ctrlKey Description: Check the state of the CTRL key.
Syntax: Event.ctrlkey
Possible value: TRUE If the CTRL key is pressed, or FALSE. Read-only.
7.fromElement Description: Detects the elements that the mouse leaves when the onmouseover and onmouseout events occur. Reference: 18.toElement
Syntax: event.fromelement
Note: This is a read-only property.
8.keyCode Description: Detects keyboard events corresponding to the internal code. This property is used for onkeydown, onkeyup, and onkeypress events.
Grammar: event.keycode[= KeyCode]
Possible value: This is a read-write value that can be any Unicode keyboard inner code. If a keyboard event is not raised, the value is 0.
9.offsetX Description: Check the horizontal coordinates of the mouse position relative to the object triggering the event
Syntax: Event.offsetx
10.offsetY Description: Check the vertical coordinates of the mouse position relative to the object triggering the event
Syntax: event.offsety
11.propertyName Description: Sets or returns the name of the changed attribute of the element.
Syntax: event.propertyname [= Sproperty]
Possible value: Sproperty is a string that specifies or returns the name of the attribute that triggered the event that changed in the event. This property is readable and writable. No default value.
Note: You can get the PropertyName value by using the Onpropertychange event.
See more highlights of this column: http://www.bianceng.cnhttp://www.bianceng.cn/webkf/script/
12.returnValue Description: Sets or checks the value returned from the event
Syntax: event.returnvalue[= Boolean]
Possible value: True the value in the event is returned false the default action on the event on the source object is canceled
See the example at the beginning of this article.
13.screenX Description: Detects the horizontal position of the mouse relative to the user's screen
Syntax: Event.screenx
Note: This is a read-only property. This means that you can only get the current position of the mouse through it, but you cannot use it to change the position of the mouse.
14.screenY Description: Detects the vertical position of the mouse relative to the user's screen
Syntax: Event.screeny
Note: This is a read-only property. This means that you can only get the current position of the mouse through it, but you cannot use it to change the position of the mouse.
15.shiftKey Description: Check the state of the SHIFT key.
Syntax: Event.shiftkey
Possible value: TRUE If the SHIFT key is pressed, or FALSE. Read-only.
16.srcElement Description: Returns the element that triggers the event. Read-only. Examples are shown at the beginning of this article.
Syntax: event.srcelement
17.srcFilter Description: Returns the filter that triggers the onfilterchange event. Read-only.
Syntax: Event.srcfilter
18.toElement Description: Detects the elements that the mouse enters when the onmouseover and onmouseout events occur. Reference: 7.fromElement
Syntax: event.toelement
Note: This is a read-only property.
19.type Description: Returns the event name.
Syntax: Event.type
Note: Returns an event name without "on" as the prefix, for example, the type returned by the onclick event is click-only.
Description: Returns the x-coordinate of the mouse relative to the parent element with the position attribute in the CSS property. If there is no ancestor element with the position attribute in the CSS property, the BODY element is used as the reference object by default.
Syntax: event.x
Note: If the mouse is moved outside the window after the event is triggered, the value returned is-1, which is a read-only property. This means that you can only get the current position of the mouse through it, but you cannot use it to change the position of the mouse.
Description: Returns the y-coordinate of the mouse relative to the parent element with the position attribute in the CSS property. If there is no ancestor element with the position attribute in the CSS property, the BODY element is used as the reference object by default.
Syntax: EVENT.Y
Note: If the mouse is moved outside the window after the event is triggered, the value returned is-1, which is a read-only property. This means that you can only get the current position of the mouse through it, but you cannot use it to change the position of the mouse.
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