Now we will learn here in JavaScript Tutorial that using of client side JavaScript is an efficient way to validate the
user input in web applications. When there are many fields in the form,
the JavaScript validation becomes too complex.
A person might think it easy to find a complete radio & checkbox
client-side validation JavaScript on the web. It would however be our opinion
that such a person would be mistaken. We searched and searched for a JavaScript
We could plug and play, so to speak. The reality was, it simply did not exist.
Here we define some common live JavaScript validation or what some might call inline error messages
to explain more.
These are reusable
JavaScript functions for common validations, here you will learn the
list of built-in JavaScript functions to make any kind of Validations in
JavaScript.
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.