How to add an onchange event to a select box via javascript?

Question

I've got a script where I am dynamically creating select boxes. When those boxes are created, we want to set the onchange event for the new box to point to a function called toggleSelect().

I can't seem to get the syntax right to create the onchange event. Can someone tell me what I'm doing wrong? It doesn't throw an error, but doesn't work, either.

  col = dataRow.insertCell(0);   var transport_select = document.createElement('select');   transport_select.id = transport_select_id;   transport_select.options[0] = new Option('LTL', 'LTL');   transport_select.options[1] = new Option('FTL', 'FTL');   transport_select.onChange = function(){toggleSelect(transport_select_id);};   col.appendChild(transport_select); 

Answer 1

Here's another way of attaching the event based on W3C DOM Level 2 Events Specification:

  transport_select.addEventListener(      'change',      function() { toggleSelect(this.id); },      false   );