select.selected in javascript code example

Example 1: javascript get selected option

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

Example 2: get index of selected option javascript

$("#sel").attr("selectedIndex")
// or
$("#sel")[0].selectedIndex
//or
$(this).prop('selectedIndex')