Check box not checked inside dropdowncontrol change event in jquery

Check box not checked inside dropdowncontrol change event in jquery

I want to check a chxkbox inside dropdownlist change event

my code is like below 

  1. $('#ddlrole').change(funtion() { $('#namecheckbox').attr('checked','checked'); });


my checkbox and dropdownlist is like below

  1. @Html.DropDownList("Roles", new SelectList((IEnumerable<EmployeeManagementSystem.DAO.RoleMaster>)ViewData["Roles"], "RoleId", "RoleName"), "Select Role", new { @id = "ddlrole", @class = "med m-wrap" }) @Html.CheckBox("CheckBox", new { id = "namecheckbox"})

but its not working

anybody help me