javascript selected select option code example

Example 1: 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

Example 2: javascript set select option

document.getElementById("mySelectID").value="my_value";
//note: setting value in html directly does not work <select value="my_value">