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How do I make a form field that has to have a specific value?

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Jan 26.2009

I have an html form that I use javascript to validate that some fields are filled out before submitting… And it works fine.

But, lately I have been getting tons of spams using the form – I would like to add a field that asks a simple question – like 2+2 and have the person answer “4” before the form can be submitted.

But, I am a javascript Newbie and don’t know how to make it a required field and have a specific value before it can be submitted.

Can someone please help.

I appreciate any assistance you can provide…

Thanks.

JadeWhiskey

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JavaScript

3 Comments(s) ↴

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@toicontienJan 26.2009 — Sounds like you need to use a form of Captcha. Search google for form captcha scripts. You'll need to implement this server side, as doing this client side could make it easy to bypass.
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@JadeWhiskeyauthorJan 26.2009 — thanks. I just took a look - I would like to validate with text rather than images - I have used those before and I sometimes can't read them - so, I just wanted something easy. Any other ideas?

JadeWhiskey
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@toicontienJan 26.2009 — Do the same thing, only implement it in server side code to make bypassing this measure less likely.
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