I have 3 date fields in a form (month, day, year). The 'month' field is a drop down menu as well as the 'day' field. The 'year' field is a text box.

The respective field id's are the same names.

Basically, I need to add some JavaScript that would prevent a user from submitting the form if he or she inputted a date in the above fields that was within 31 days of the current day. Anything outside of 31 days is okay. I don't want the error message to be returned upon entering the date, I need it to be returned when they try to use the submit button, because I'm using in page error messaging.

How can I tell these 3 fields to verify the current date against the entered date, and if it's 31 days or less, send back an in page error message, if it's over 31 days than the form would submit.

Thanks
Jacob

You'd want to do it with a server side scripting language such as PHP, or it could be circumvemted by changing the system clock.
A couple of if() statements should do the trick.

Rufo.

I agree with Rufo. Client-side Javascript will be convenient because you can instantly check the validity of the fields without loading a new page. But don't let your server rely on client-side security measures. It's a trivial task for someone with malicious intentions to submit any info they want to the server. JS is convenient, but not secure.

If you still want to use JS, just read up on how to read the form data and how to read the date on the system clock, then compare the two dates. If you want to check it when they click submit, use the onSubmit() method in the form tag. I'm a little rusty on my JS, but maybe that can get you started.