how to get selected option value code example

Example 1: get selected option value

var conceptName = $('#aioConceptName').find(":selected").val();

Example 2: javascript get selected option

var e = document.getElementById("selectElementID");
var value=e.selectElement.options[e.selectedIndex].value;// get selected option value
var text=e.options[e.selectedIndex].text;//get the selected option text