Tutorial: Check Username Availability with jQuery and PHP
Many websites have user registration forms, where the user fills in the data like the Name, Username, password and many other details. The user then clicks on the submit button to get the error message “Username Not available!”. This really creates a bad impression on the user who has already invested a lot of time in filling in the form. In such cases developers need to take care of the username availability right when the user is filling in the username.
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