IE: There are objects
FF: No object. The event object can be passed to the parameter of the function. For example, onmousemove=doMouseMove(event)
Current mouse coordinates
IE: and.
FF: and.
General: Both have attributes.
The current coordinate of the mouse (plus the distance that the scroll bar rolls)
IE: and.
FF: and.
The coordinate positions of x and y of the label: and
IE: Yes.
FF: No.
General: and .
The height and width of the form
IE: and. Note: The page must have a body tag at this time.
FF: and, and.
General: and.
Add Event
IE：(”onclick”, func);。
FF：(”click”, func, true)。
General: =func. Although both can use onclick events, the effects of onclick and the above two methods are different. Onclick only executes one process, while attachEvent and addEventListener execute a list of procedures, that is, multiple processes. For example: ("onclick", func1); ("onclick", func2) In this way, both func1 and func2 are executed.
Custom properties of tags
IE: If a property value is defined for the tag div1, you can get the value with div1["value"].
FF: Cannot be used with div1["value"].
General: ("value").
Parent, child, and delete nodes
IE：parentElement、，(true)。
FF：parentNode、，(node)。