I am starting with javascript and need to know how to detect the selection change of a dropdownlist in javascript?

thank you

You can use "onchange" event in JS..check this.. 

DropDownList1.Attributes.Add("onchange", "getIndex();") ;// where getIndex is JS function

thank you.

how do I retreive which value was selected? what is the javascript property that retreives the user selection? is it .value or .selectedvalue?

thanks again

bcweed966:

how do I retreive which value was selected?

var e = document.getElementById("DropDownList1"); //If it doesn't work, use clintID
var str = e.options[e.selectedIndex].value;