php - Disable a submit button when one of the fields is empty -

i trying disable submit button when one or more of selectors (generated dynamically) shown in picture empty..

i tried following jquery code:

    <script>      var $submit = $("input[name=store_values]");     $(".ownlevelselect").each(function(){     if($(".ownlevelselect:empty").length>0){         $submit.attr("disabled","disabled");     }else {         $submit.removeattr("disabled");     }     });  </script> 

and these relevant parts of form:

   echo "<select class='ownlevelselect' id='ownlevelselect' name='level-".$compi['competence_id']."' >"; 

and input buttons:

   echo "<input type='submit' name='submit_values' value='save'>";   echo "<input type='submit' name='store_values' value='store'></form>"; 

the 1 want disable 1 name='store_values'

there's ambiguous in question, mean empty dom empty (selects contains no elements) or empty selects empty value selected ?

if mean empty emtpy value, can try this, handling change event shadow wizard said:

$('document').ready(function(){      var submitbutton = $('input[name="store_values"]');     /* called disable button on page load, done here possible server-side */     checkvalues()      /* called on change event on dropdowns */            $('select.ownlevelselect').on('change',function(){         checkvalues();     });      function checkvalues(){         /* disable button if found empty <select> (mean, no <option> inside), or select empty value selected */         submitbutton.prop('disabled',$(".ownlevelselect > option:selected[value=''],.ownlevelselect:empty").length > 0);     } }); 

if mean empty "dom empty" (no option defined inside select), can try (you can place function , call each time dynamically add element)

$('document').ready(function(){     var submitbutton = $('input[name="store_values"]');     submitbutton.prop('disabled',$(".ownlevelselect:empty").length > 0); }); 

edit

be carefull ids, don't have relevant part of code sure, seem reuse same id selects, bad idea :)

edit2

here's fiddle, can see if missed something: http://jsfiddle.net/d8rb9/