javascript: data validation
in this assignment I was supposed to write a html page with a javascript pagemerged to it. the html was just a simple form for entering a visa card number
and the javascript file's mission was to
- first number must be a 4
- amount of input numbers must be between <13 and >16
- only numbers accepted
- LUHN-formula, accounted according to a specific formula
... if anything fails, a specific error message was given to the user via a messagebox.
try it yourself! enter your own VISA card number if you would like. as you can see in the
source code, this is only a client side script, meaning none of the info will be sent through.
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