“username validation js” Code Answer
If you are a new javascript user you have to make sign up to use javascript which is compulsory for new users. For this you have to create a simple sign up form that will have four input fields given below:
Username
Email address
Password
Confirm Password
Then you can use javascript to develop your javascript validation. Or you can use the javascript library to do this.
username validation in javascript
on Jan 01, 1970
function validateUserName(username){
var usernameRegex = /^[a-zA-Z0-9]+$/;
return usernameRegex.test(username);
}0
Validating the form submitted by the user is quite important because it may have some inappropriate values that will show errors later. So, validation is essential for the authentification of the user. Javascript itself provides a facility for validation of user form on the client-side that causes faster data processing on the server-side.
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