I have a form with a button, which adds user inputted data into
database. I've been looking for a way to prevent users from pressing
the same button twice mistakingly.

I've learned that this is possible to make and send a unique id in
hidden input, and check if the id is used before database query is
issued. (PHP Cookbook [O'reilly]).

But, is there a way to make this happen without using database? It
would cool if I could only use HTML/JavaScript/CSS.


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