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I have a form with the following tag:

<input name="address1" type="text" id="address1" class="validate['alphanum','required']" size="40" maxlength="50" /><div id='error-message-address1'></div>

However I'm getting some spam submissions that is letting a URL be entered into this field. Shouldn't the 'alphanum' validation catch that?

Hi critter42 ,

Yes and no.

Yes it will prevent that entry if the browser has JavaScript enabled.
No, it won't block a spam bot that doesn't have JavaScript enabled.

If you add a serverside validation check or a block that should stop both kinds of spam.

Bob