how to validate valid data in ajax

validating data in ajax

[freshfromseo]

hi everyone!

does anybody knows how to validate data using ajax? it must check first in the database and then if the data inputted by the user already exist there must be an error message that the data is already exist!..

[jpl80]

Usually a server side language like PHP or Coldfusion communicates with the database server. AJAX and JavaScript are for client-side validation (i.e., valid phone numbers, zip codes, etc.)

[jpl80]

Usually a server side language like PHP or Coldfusion communicates with the database server. AJAX and JavaScript are for client-side validation (i.e., valid phone numbers, zip codes, etc.)