Question

how do i get the dropdown rel=”30″ value?

  <select id="t_dermal_name">
     <option value="1" rel="30">Between Eyebrows</option>
       <option value="7" rel="30">Individual Line Softening</option>
       <option value="2" rel="30">Lip Contouring</option>
   </select>

jquery:

$("#t_dermal_name").change(onSelectChange);

function onSelectChange(){
    var selected = $("#t_dermal_name option:selected");     
    var output = "";
    if(selected.val() != 0){
        output = selected.rel();
    }
    $("#output").html(output);
}

Answer 1

You can use the :selected selector to find the selected option and retrieve its rel value using the attr() method.

Something like this: http://jsfiddle.net/yAQhq/

$("#t_dermal_name").change(onSelectChange);

function onSelectChange(){
    var output = "",
        $this = $(this);

    if($this.val() != 0){
        output = $this.find('option:selected').attr('rel');
    }
    $("#output").html(output);
}