AJAX code to pass values by POST Method in Javascript.
function datainsert(){ var xmlhr = new XMLHttpRequest(); var url = 'gethint.php'; var fname = document.getElementById('fname').value; var lname = document.getElementById('lname').value; var vars = "firstname="+fname+"&lastname="+lname; xmlhr.open("POST",url,true); xmlhr.setRequestHeader("content-type","application/x-www-form-urlencoded"); xmlhr.send(vars); }