July 1998
Intermediate to advanced
1456 pages
65h 5m
English
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Name
closed — NN 3 IE 4 DOM n/a
Synopsis
Read-only
Boolean value that says whether the referenced window is closed. A
value of true means the window is no longer
available for referencing its objects or script components. This is
used most often to check whether a user has closed a subwindow
generated by the window.open( ) method.
Example
if (!newWindow.closed) {
newWindow.document.write("<HTML><BODY><H1>Howdy!</H1></BODY></HTML>")
newWindow.document.close( )
}Value
Boolean value: true | false.
Default
None.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.