perl / ifram / javascript question

[Andrej Marjan]

Madison Kelly wrote:
> Hi all,
>
>   I've got a thing I want to do with my web app that I know is 
> possible but can't for the life of me figure out... I've googled this 
> do death but am probably stumbling over something really simple.
>
>   Anyway, I want to use perl to round a number (for now; later want to 
> submit a form without reloading the whole page).
>
>   So I'd like to be able to have a javascript function pass a couple 
> variables to a perl script (ie: 
> 'http://foo.com/cgi-bin/script?num=<real_number>&precision=<precision>'). 
> Then, once the perl script does it's magic, load the numbers into 
> hidden form fields via an iframe for the calling script to read).

Well you could just do it in javascript, e.g. 1.563532.toPrecision(3) == 
"1.56"

Do you have a particular reason for wanting to do the rounding server-side?

I don't know if there's a cleverer way to do it in Perl, but sprintf 
will do the trick, e.g. sprintf("%.2f", 1.5678).


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