HTML
Use change event as
select
event is invoked when some text is selected in an element.
var a = document.getElementById('country');
a.addEventListener('change', function() {
alert(this.value);
}, false);
<select id="country">
<option value=""></option>
<option value="india">India</option>
<option value="Austrelia">Austrelia</option>
<option value="turkey">Turkey</option>
</select>