Sorry for the OT...
I have a parent div, which contains many child divs. The parent div is set
to scroll when it's content is to big.
What I'm trying to work out, is a way to find out when one of those child
divs is visible and when it's not.
I thought maybe scrollTop or offsetTop but I'm low
In Ext, the Element class has built-in methods to get just about
anything you need from an element, including position info.
http://extjs.com/deploy/dev/docs/?class=Ext.Element
jQuery, out of the box, can provide offset, width and height only and
enhanced capabilities via the dimensions
Doesn't sound fun though-- maybe someone will post and show us a
pre-built function in the prototype library or something. :)
Many libraries include a method to get the coordinates of any element.
Right now I am thinking just about the one available in Mootools:
-Original Message-
From: Rey Bango [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 12, 2008 3:50 PM
To: CF-Talk
Subject: Re: OT Javascript - when is an element visible
In Ext, the Element class has built-in methods to get just about
anything you need from an element, including
I'm not sure if scrollTop is part of the spec for DOM (or widely
supported -- innerHTML for example is not but widely supported).
Assuming that scrollTop is supported in the browser though, I'd think
something like this might work:
var ct = container.scrollTop;
var ch = container.offsetHeight;
I know there is a JS method called .scrollIntoView() (IE only??) which
will cause the an element to scroll to where it is visible. Not sure
how to tell if it is visible though. I suppose if you know the edges of
the viewable area, you can calculate the position of the element in
question via its
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