Below is the Java Script code to perform this basic check to see if a given HTML input is empty or not.
Through Java Script, we can validate name, password, email, date, mobile number etc fields.
This is achieved by grouping together validation functions in "modules", making it possible to load only those functions that's needed to validate a particular form.
This might include adding additional properties to the observable or intercepting writes by placing a writable computed observable in front of the observable.
Knockout extenders provide an easy and flexible way to do this type of augmentation to an observable.
It is important to validate the form submitted by the user because it can have inappropriate values. The Java Script provides you the facility the validate the form on the client side so processing will be fast than server-side validation.
So, most of the web developers prefer Java Script form validation.