jQuery: get data attribute

Question

In my html I have a span element:

This is a

Answer 1

Change IDs and data attributes as you wish!

  
       Mazda
       Honda
       Mercedes
       Toyota
  

$("#selectVehicle").change(function () {
     alert($(this).find(':selected').data("year"));
});

Here is the working example: https://jsfiddle.net/ed5axgvk/1/