How to Call Asp.net Server Side method from jQuery

Introduction: 

Here I will explain how to call server side methods or functions from jQuery in asp.net.

Description: 
   
In previous posts I explained jQuery Convert lowercase to uppercase, jQuery Disable specific days in datepicker jQuery lightbox slideshow, jQuery Generate thumbnails from youtube videos and many articles relating to JQuery, Asp.net. Now I will explain how to call server side methods or functions from jQuery inasp.net.

To call server side methods or function from jQuery check below article here I explained how we can call required methods from client side

Call page methods from jQuery in Asp.net