How to fire an dropdownlist event instantaneously?

UPDATE2 : The 'jquery-1.4.4-vsdoc.js' file was an issue for some reason actually...is that file only for intellisense ? ...i commented the include out for t开发者_运维问答hat and it works fine now..

UPDATE: OK so it worked when I used the original js file- http://code.jquery.com/jquery-1.4.4.js

I have a dropdown: <%= Html.DropDownList("dropdownid", new SelectList(Model.WeightToLoseList, "Value", "Text")) %>

in my jQuery, I assign change event like this:

$('#dropdownid').change(function() {......});

But this event only is firing when i select anything and then click anywhere outside on the page..but I want it to work instantly and show me once I select items from the dropdownlist and not after i click outside...this behaviour is reproduced only on chrome and firefox. But it works fine on IE8. Any ideas ?

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Duplicate of Fire event each time a DropDownList item is selected with jQuery

Vincent Ramdhanie's answer was:

$(document).ready(function(){
 var clicknum = 0;
 $("#dropdownid").click(function(){
        clicknum++;
        if(clicknum == 2){
            alert($(this).val());
                clicknum = 0;
        }
 });
});