how to get value of select list in javascript code example

Example 1: javascript to get value of dropdown

var e = document.getElementById("elementId");
var value = e.options[e.selectedIndex].value;
var text = e.options[e.selectedIndex].text;

Example 2: use js to get select value

// reference to 'scripts' select list 
// used throughout the examples below
var sel = document.getElementById('scripts');

// display value property of select list (from selected option)
console.log( sel.value );

Example 3: how to get selected list item value in javascript

var as = document.form1.ddlViewBy.value;
var e = document.getElementById("ddlViewBy");
var strUser = e.options[e.selectedIndex].value;