user input in web applications. When there are many fields in the form,
A person might think it easy to find a complete radio & checkbox
We could plug and play, so to speak. The reality was, it simply did not exist.
to explain more.
for common validations, here you will learn the
It includes things like checking if a value is a number, integer, blank, and so on...
It also has generic routines for getting and setting the value of any type of input field,
as well as checking if the value has changed.