----------------html----------
<div id='iconos'></div>
<script>
refreshcontrol();
</script>
------------------JS-----------
function refreshcontrol(){
'use strict';
var keyCodes = {
116 : "f5 "
};
var body = document.querySelector('body');
body.onkeydown = function (e) {
if ( !e.metaKey ) {
if(e.keyCode==116)
{
var finsesion=1
$.post('finsesion.php',{action: "iconos", finsesion:finsesion},function(res){
$('#iconos').html(res);
});
e.preventDefault();
}
}
-------------PHP finsesion.php-----------
<?php
session_destroy();
header('Location: login.php');
?>