get html select selected value code example
Example 1: get selected option value
var conceptName = $('#aioConceptName').find(":selected").val();
Example 2: html get selected option javascript
<select id="ddlViewBy">
<option value="1">test1</option>
<option value="2" selected="selected">test2</option>
<option value="3">test3</option>
</select>
<script>
var e = document.getElementById("ddlViewBy");
var strUser = e.value; // 2
var strUser = e.options[e.selectedIndex].text; //test2
</script>