The Advanced JavaScript Payment Form is designed for students who need to obtain an access code for a notes website. Users must fill out the form with their details before proceeding with payment. The ...

Prevents consecutive form submissions of identical form values. Repetitive form submissions that would submit the identical form values are prevented, unless the form values are different to the ...

Of all the hats JavaScript can wear, its form-processing features are among the most sought and used. Learn how to use JavaScript for form processing, validation, and more.