What is Ajax ?

It stands for Asynchronous JavaScript And Xml 

$.ajax({

    type: "POST",

    url: "../Webservices/EmployeeService.asmx/GetEmployeeOrders",

    data: "{empid: empid}",

    contentType: "application/json; charset=utf-8",

    dataType: "json",

    success: function(result) {

        alert(result.d);

    }