It's a chrome extension as a cross-origin ajax bridge.

Setup:

1. Install Cross-Origin-AJAX-Bridge Chrome extension
2. In your html insert <script src="https://raw.githubusercontent.com/KJlmfe/Cross-Origin-AJAX-Bridge/master/lib/chromeSuperAjax.js"></script>
3. use ChromeSuperAjax() like $.ajax() but ChromeSuperAjax() can make "Cross-Origin AJAX"

PS: It's a simple demo.