JavaScript: The Definitive Guide, Fourth Edition

Name

HTMLElement.onmouseup — the handler invoked when the user releases a mouse button

Availability

JavaScript 1.2; HTML 4.0

Synopsis

<element onmouseup="handler" ... > element.onmouseup

Description

The onmouseup property of an HTMLElement object specifies an event handler function that is invoked when the user releases a mouse button over the element.

The initial value of this property is a function that contains the JavaScript statements specified by the onmouseup 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 onmouseup 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.

In Netscape 4, the Event.which property specifies which mouse button was pressed. In IE, the Event.button property specifies the button number.

See Also

Event, HTMLElement.onclick; Chapter 19; EventListener, EventTarget, and MouseEvent in the DOM reference section