js/timer.js

   1 /* vim: set ts=4 tw=4 sw=4 noet: */
   2 var timerRef=setInterval(function(){myTimer()}, 1000);
   3 var timeStart = new Date().getTime() + timeout;
   4 var last = 0;
   5
   6 function myTimer() {
   7     var elapsed = new Date().getTime();
   8     var expire = timeStart - elapsed;
   9     var timeLeft = Math.round(((expire % 86400000) % 3600000) / 60000);
  10
  11     if (timeLeft < 0) {
  12         clearInterval(timerRef);
  13         console.log('Session expired, reload page');
  14         last = 0;
  15         location.reload();
  16     } else if (timeLeft < 1) {
  17         timeLeft = 'Expired';
  18         console.log('Session valid < 1');
  19         document.getElementById("time").style.background = "red";
  20         document.getElementById("timer").innerHTML = timeLeft;
  21     } else {
  22         if (timeLeft > last) {
  23             last = timeLeft;
  24             console.log('Session valid < ' + timeLeft);
  25             timeLeft = '< ' + timeLeft + ' min';
  26             document.getElementById("timer").innerHTML = timeLeft;
  27         }
  28     }
  29 }