A regular expression is a sequence of characters that forms a search pattern.
When you search for data in a text, you can use this search pattern to describe what you are searching for.
Suppose you have to disable all validators of a validation group.
We can validate email address at client side and server side.
Add the class "submit" to the element that should validate upon submit.
It stops this from happening where the entire form is validated (assuming the 'Sign Up' button is clicked): Get Started Replace the validate bind the validate event from: To create a validation group, add the class "form" to the containing element.
In Java Script, regular expressions are often used with the two string methods: search() and replace().
But what if I only want to enable the validation of certain field based on certain conditions?To validate email address on client side, we can use java script with regular expression.