Validation code automatically validates PHP back-end Verification code detection _php instance when Ajax submits the form

This article through the source code show how to implement the form submission, the verification code first detect correctness, incorrect then do not submit the form, update the verification code.

1. Front-end Code index.html

  Verification code submission Self-authentication 
 
  
 
 

2, back-end verification code detection checkcode.php

SOURCE Download Address: The AJAX implementation of the form when the verification Code automatic verification

The above is the whole content of this article, I hope that everyone's learning has helped, but also hope that we support the script home.

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