How can I use onchange to feed javascript the users selection in a dropdown list?

Question

I know this question is simple, but I couldn't find it elsewhere so I thought it would be appropriate to ask.

I have a simple drop down list. I use onchange to trigger an event when the selection is changed. I want to know what I need to do in order to turn the selection into a variable within javascript. So that I can use that variable to do something else (specifically to populate another dropdown list using a switch statement).

Thanks

You want to get the <select> value?

Peter
– Peter

2012-08-11 00:20:04 +00:00
Commented Aug 11, 2012 at 0:20 — Peter
– Peter, Commented Aug 11, 2012 at 0:20

Peter · Accepted Answer · 2012-08-11 00:25:17Z

2

Not sure if this is what you want:

var optionSelected = 0;

var select = document.getElementById('mySelect');

select.onchange = function() {
    optionSelected = this.value;
    alert(optionSelected);
};

demo: http://jsfiddle.net/vTDAQ/1/

answered Aug 11, 2012 at 0:25

Peter

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