javascript - onchange of FilteringSelect do not work

Question

Same code I'm using of dojo documentation
just downloaded code work fine but onchange event do not fire on my project.
I have make it to work by firing onblur onBlur: function(){alert(3)}
What thing may cause onchange event not fire?

var filteringSelect = new FilteringSelect({
        id: "stateSelect",
        name: "state",
        value: "CA",
        store: stateStore,
        searchAttr: "name",     
        onChange: function(){alert(3)}
    }, "stateSelect");

Answer 1

Just put different id on the array like:

var stateStore = new Memory({
        data: [
            {name:"Alabama", id:"AL"},
            {name:"Alaska", id:"AK"}
              ]
});

1. If there is no id on your Array, onChange event will not fire
2. If the value of two id are same, onChange event will fire just for the first time.

Answer 2

I think something else is wrong since it's working fine here. I even made a JSFiddle to show it's working.

Also, there is another way (I think it's more preferred too) by using the dojo/on module:

on(filteringSelect, 'change', function() {
       alert(3); 
});

Another JSFiddle to demonstrate this can be found here.