set readonly for the textbox control useing ajax

Hi 

how to set read only for the  $('#EmployeeID').val(result.empid);control ,,below my code

$.ajax({
url: "/Home/getbyID/" + EmpID,
typr: "GET",
contentType: "application/json;charset=UTF-8",
dataType: "json",
success: function (result) {
$('#EmployeeID').val(result.empid);
$('#Name').val(result.Name);
$('#Age').val(result.Age);
$('#dobs').val(result.dateofbirth.parseNETDate());
$('#add').val(result.address);

$('#myModal').modal('show');
$('#btnUpdate').show();
$('#btnAdd').hide();
},
error: function (errormessage) {
alert(errormessage.responseText);
}