Blogs and Tutorials for AJAX methods

jQuery AJAX with Page Method example in ASP.NET
This article gives you step by step example for implementing WebMethod and calling it through jQuery.ajax() method

jQuery AutoComplete by Example in ASP.NET
This article helps you to create AutoComplete textbox using jQuery library. This will also give you details about jQuery AutoComplete UI, CSS and select event.

jQuery AJAX AutoComplete in ASP.NET MVC Core
This tutorial explains how to use the jQuery AJAX AutoComplete feature in your ASP.NET MVC Core application. For this, you will use Visual Studio 2019, NET5, EF Core, Web API controller, and AdventureWorks database of SQL Server.