If you're looking for a tutorial that uses the Model-View-Controller approach, see Get started with ASP.NET Core MVC.. Added CDATA blocks so WP Accessibility doesnt prevent validation as XML. You have a parent element, you want to get all child of specific attribute 1. get the parent 2. get the parent nodename by using parent.nodeName.toLowerCase() convert the nodename to lower case e.g DIV will be div 3. for further specific purpose, get an attribute of the parent e.g parent.getAttribute("id"). The data-ajax-update attribute is used to specify the DOM element that should be updated with the response. Can I use the following jQuery code to perform file upload using POST method of an ajax request ? At the bottom of this HTML page, I created a