get value on change
HTML
<select id="select_id">
<option value="0">-Select-</option>
<option value="1">Communication</option>
<option value="2">Lorem</option>
<option value="3">Ipsum</option>
</select>JavaScript
function test() {
console.log(event.srcElement.value);
}
document.getElementById('select_id').addEventListener('change', test);