How working alert function using Jquery in c# functions

Question

J query function

 

$(document).ready(function () {

$('#fakeLink').click(function () {

$('.backdrop, .box').animate({ 'opacity': '.50' }, 300, 'linear');

$('.box').animate({ 'opacity': '1.00' }, 300, 'linear');

$('.backdrop, .box').css('display', 'block');

});

 

 

 

 

Want to call C# function in code behind.