What is the role of Script Manager in Ajax?The ScriptManager controls client script for ASP.NET AJAX pages. It also registers the script for the AJAX Library.
Script Manager, as the name suggests is used to manage the client side script of Ajax. Since Ajax uses Java Script, there needs to be a mediator to manage this script and restrict a particular version to a browser. A Script manager is present on every page where Ajax is used to enable the Ajax Libraries. These Libraries in turn helps to implement the core Functionality of Ajax: Partial rendering.