Javascript [Electronic resources] : The Definitive Guide (4th Edition) نسخه متنی

Availability

JavaScript 1.2; HTML 4.0

Synopsis

<element onmousemove="handler" ... >
element.onmousemove

Description

The onmousemove property of an HTMLElement object
specifies an event handler function that is invoked when the user
moves the mouse pointer within the
element.

The initial value of this property is a function that contains the
JavaScript statements specified by the onmousemove
attribute of the HTML tag that defined the object. When an event
handler function is defined by an HTML attribute, it is executed in
the scope of element rather than in the
scope of the containing window.

In the Netscape 4 event model, the onmousemove
handler function is passed an Event object as an argument. In the IE
event model, no argument is passed, but the applicable Event object
is available as the event property of the Window
object that contains the element.

If you define an onmousemove event handler, mouse
motion events are generated and reported in huge quantities when the
mouse is moved within element. Keep this
in mind when writing the function to be invoked by the event handler.

In Netscape 4, you cannot define this event handler on individual
elements; instead, you must explicitly register your interest in
mouse motion events by capturing them with the
captureEvents( ) method of a Window, Document, or
Layer object.

See Also

Event, Window.captureEvents( ); Chapter 19;
EventListener, EventTarget, and MouseEvent in the DOM reference
section