Setting up reCAPTCHA 2.0 with AJAX Demo/Tutorial

How do we implement reCAPTCHA with AJAX?

In this short tutorial, I am going to create a really basic website with a really basic form. It is going to contain 3 files: index.html, contact.js, and mail.php.

 

index.html

NOTE: make sure to replace YOUR_KEY with your data-sitekey you get from reCAPTCHA.

contact.js

mail.php

Special thanks to: https://www.kaplankomputing.com