AJAX Page - Server Data Validator "On the fly" - Examples


Try to add a new username.
The username must be unique in the list of taken usernames.
The validation is made on server side, without reloading the page.

Username:
Please enter an unique username.
      Allowed characters are letters, numbers, _ and -.



The username is correct.
Already taken usernames:
  • John
  • David
  • Tim
  • Sheldon
  • Kim



When focus moves out from the input field, data is validated on server side and
error is shown in red color below the input field, without reloading the page.


Name:
Please enter a valid name. Allowed characters are letters, numbers, _ and -.
Phone: * Phone number format is: (###) ###-####
  Please enter a phone number in the format:(###) ###-####


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