Live demo: Longmuir/pen/Wb Oydx data-validate is injected in all the input fields of your form but when using js Form Validator, you don't require this heavy syntax and the validation will be applied to your form in one shot, without need to touch at your HTML code.
If you’re looking to build an interactive website, which contains any form of input, then you should validate the data you get from the users.
If it’s a registration form you have to validate the name and surname fields, the e-mail, username, age, zip code and everything else, so that you don’t send unnecessary calls to your server.
When you submit a form to a CGI program that resides on the server, it is usually programmed to do its own check for errors.
If it finds any it sends the page back to the reader who then has to re-enter some data, before submitting again.
We're going to be checking the form using a function, which will be activated by the form's Validating this form would be considerably simpler than one containing radio buttons or select boxes, but any form element can be accessed.