JQuery has lot more advantages compare to asp.net ajax controls toolkit
- JQuery is open source
- JQuery is light weight, means its smaller in size and don't increase page size when load, hence page will load faster compare to page which are using asp.net ajax controls.
- JQuery script file is cache-able, most of the modern browser do cache of script, css and image files, which means JQuery script file is downloaded only ones when page is loaded for the first time, all subsequent calls to page using JQuery doesn't need to download it again and again.
- JQuery can run on any html page, while asp.net ajax controls runs on asp.net web pages.
- JQuery is not only used for Ajax, JQuery can be used for giving effects to your website like css changing or pop-up flashing and much more effects, which is not easily available with ajax controls.