Stackoverflow - A number of dropdown boxes - only wish to get data from one. How?

http://stackoverflow.com/questions/9780325/a-number-of-dropdown-boxes-only-wish-to-get-data-from-one-how/9780386#9780386

by marcgrabow

HTML

<form id="form" name="form" method="post" action="nextStep.cshtml">
   <select name="1">
      <option value="1">1</option>
      <option value="2">2</option>
   </select>

   <select name="2">
      <option value="3">3</option>
      <option value="4">4</option>
   </select>
    
    hidden field:
    <input type="text" name="myValueField" id="myValueField">

</form>

JavaScript

// or disable other dropdowns after selection
$(function(){
   $('#form select').change(function(){
      var thisDd = $(this);
      $('#myValueField').val(thisDd.val());
      $('#form select').each(function(i, e){
          if(e==thisDd[0]) return; // not disable myself
          $(e).attr('disabled', 'disabled'); // disable other
      });
   });
});