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How to determine if text in DIV block is in view or goes hidden

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Apr 03.2007

In a JSP page, I defined a <DIV block as:

<div style=”width: 100px; height: 510px; overflow: auto>
…
….
…
</div>

My case is like this, only if the text goes hidden(non-viewable), then the DIV block need to scrollTop to bring the text to view; If the text already in view, I do not need to scroll.

But how can I determine if certain text within the DIV is still in the view (or become hidden).

Thanks

Scott

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JavaScript

2 Comments(s) ↴

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@tranzparentlApr 03.2007 — I'm not sure about the scrollTop thing but I have something similar and not sure that I really needed it.

Is this similar to what you were looking for?

http://tryptechnics.com/temp/div/
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@scottjsnauthorApr 03.2007 — Thanks for the help.

Actually, this is what I am looking for:

<DIV......>

aaaaa

bbbbb

ccccc

ddddd

eeeee

</DIV>

Now, the line: [B]eeeee [/B]goes out of the view area, hence hidden and non-viewable.

What I want to know, if how can I use the code to dynamically test if line: [B]eeeee [/B]is vieable or not. But I do not know how to do it?


Thanks


Scott
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