Introduction AJAX = Asynchronous JavaScript and XML AJAX is not a programming language, but a way to use existing standards, AJAX is the art of exchanging data with a web-server, and updating parts of a web page - without reloading the whole page. Here is a basic example of how we use AJAX in WordPress. It explains how to take a variables from JavaScript and pass it to a PHP function, and then pass it back to the JavaScript. For using this you must know how to enqueue JavaScript in Wordpress. JavaScriptCode [code] //PS: you may need to add jQuery Library in your theme for using this in some cases, but in admin side, jQuery is already added. jQuery(document).ready(function($) { // here you can get any user input or can…