- emailvalidation will check to see if a value lives up to the general syntax of an email.
- valuevalidation will check to see if a value is within a certain interval.
- digitvalidation will check to see if a value consits of a certain number of digits.
- emptyvalidation will check to see if a field is empty or not.
The validation can take place as the visitor enters values, or all at once upon clicking the submit button after entering the values.
Each validation function can easily be customized to fit the needs of the fields they are checking.