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JavaScript: The Definitive Guide, 4th Edition
By
David Flanagan
Publisher
: O'Reilly
Pub Date
: November 2001
ISBN
: 0-596-00048-0
Pages
: 936
Slots
: 1
This fourth edition of the definitive reference to
JavaScript, a scripting language that can be embedded
directly in web pages, covers the latest version of the
language, JavaScript 1.5, as supported by Netscape 6 and
Internet Explorer 6. The book also provides complete
coverage of the W3C DOM standard (Level 1 and Level 2),
while retaining material on the legacy Level 0 DOM for
backward compatibility.
Availability
JavaScript 1.1
Synopsis
<body onblur="handler" ... ><frameset onblur="handler" ... >
window.onblur
Description
The onblur property
of a Window specifies an event handler
function that is invoked when the window loses keyboard focus.
The initial value of
this property is a function that contains the semicolon-separated
JavaScript statements specified by the onblur
attribute of the <body> or
<frameset> tags.
In the Netscape 4 event model, the onblur 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.
Usage
If your web page has animation, you can use the onblur(
) event handler to stop the animation when the window
doesn't have the input focus. In theory, if the window
doesn't have the focus, the user probably can't see it or
isn't paying attention to it.
See Also
Window.blur( ), Window.focus( ), Window.onfocus; Chapter 19; Event, EventListener, and EventTarget in the
DOM reference section
