JavaScript Events Object (Event object)

Original: http://www.cnblogs.com/songyaqi/p/5204143.html

• In the function that triggers the event, we receive an event object, through which we need some parameters, for example, if we need to know who the event is for, we can get it through the property of event target (ie aside), Or you can block the default behavior of the browser by means of a method preventDefault() . Here are some properties and methods of the event object

Properties	Description
altkey
button
clientx
clienty
ctrlkey
metakey
relatedtarget
screenx
screeny
shiftkey

• IEProperties (in addition to the mouse/event properties above, IE also supports the following properties)

Properties	Description
cancelbubble
fromelement
keycode
offsetx,offsety
returnvalue	If this property is set, its value is higher than the return value of the event handle. Set this property to
srcelement
toelement
x,y

• The standard event attribute lists the properties defined by the Level 2 DOM event standard.

Properties and Methods	Description
Bubbles	Returns a Boolean value that indicates whether the event is a bubbling event type.
cancelable	Returns a Boolean value that indicates whether the event can hold a default action that can be canceled.
currentTarget	Returns the element whose event listener triggered the event.
Eventphase	Returns the current stage of event propagation.
target	Returns the element that triggered this event (the target node of the event).
TimeStamp	Returns the date and time the event was generated.
type	Returns the name of the event represented by the current event object.
Initevent ()	Initializes the properties of the newly created Event object.
preventDefault()	Notifies the browser not to perform the default action associated with the event.
stopPropagation()	No more events are being dispatched.

JavaScript Events Object (Event object)