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Forms ? basic math

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Jul 30.2004

There is a “Form” site that I started using, (from a link on the HTML Goodies site).
I did a test form just to see how it works. In that form the calulations are performed right on the page, I was wondering how that is done:
[url]http://www.formdesk.com/epourania/test02[/url]

I looked at the code, but I can’t figure it out.
Is that some special scripting? or can that be done in vanilla HTML?

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@AdamGundryJul 31.2004 — You need a scripting language of some kind to do this, because plain HTML is for markup only. In this case, JavaScript has been used - it is the most common client-side language available. In general, however, the need to make sure users with JavaScript disabled can use your site means you should often use a "server-side" language such as PHP or Perl instead, with JavaScript used to improve usability where possible.

As for that page's code, I wouldn't want to figure it out either - there seems to be a lot of unnecessary extra code present. You can achieve something like that in JS with only a few lines of code.

Adam
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@anothenauthorJul 31.2004 — Thanks Adam, I'm transferring this post to javascripting.

I've been attempting to learn the code, I'm still trying to figure it out.
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