Java Script provides the facility to validate the form on the client-side so data processing will be faster than server-side validation. Through Java Script, we can validate name, password, email, date, mobile numbers and more fields.
Client-sidevalidation is important due to the fact that client-side validation can be completely bypassed by turning off Java Script.
Explain describes your expression in plain English.
The follow snippet is a function I use to validate email addresses.
A Java Script Regular Expression is an object, describing a pattern of characters in Java Script.