Guide's Form Validation Scripts

Restricting how much text can be entered into a textarea.

If you have two dropdown lists in your form where selecting certain values in one list require that the same value be selected in the second list then this simple Javascript will link them for you.

If you have two dropdown lists in your form where selecting certain values in one list require that the same value be selected in the second list then this simple Javascript will link them for you.

Grouping checkboxes and limiting the number of entries selected in each group using Javascript.

You will probably need to write at least some of the Javascript code to validate the text fields on your forms for yourself. To make the job easier, this collection of functions perform a lot of the validations that you will need to incorporated.

A little different from the other form validation functions because this one works while your visitor is entering the date validating it and formatting it as they type rather than waiting until they finish.

If you have a field for credit card number on your form then this script can provide basic field validation for you.

Dates can be entered in a lot of different formats. This ready to use script can recognise many of the formats that dates can be entered in. It can also validate that the date entered is not in the future or not in the past (whichever is appropriate for your requirements).

If you have a field for email address on your form then this script can provide the necessary field validation for you.