For get Selected option of select box use the “ e.options[e.selectedIndex].value” in javascript.
Example
<select name=”jobrole” id=”jobrole” class=”text2″ style=””>
<option value=””>Job Role</option>
<option value=”1″ >Technical</option>
</select>
<script>
var e = document.getElementById(‘jobrole’);
var jobroleId = e.options[e.selectedIndex].value;
if(!jobroleId || jobroleId == ‘0’) {
alert(‘Select one job role’);
}else {
document.frmabtdubai.jobroleflag.value = jobroleId;
document.frmabtdubai.submit();
}
</script>