javascript - continue looping after alert message -

below function use check session of page. page reload after clicked alert message.

var timeleft = 60;  function checktime() {     timeleft--;      if (timeleft == 30 )      {         alert("30 secs left.");         window.location.reload();     }  } 

is there anyway timeleft continue minus (if user din't not notice alert message) redirect logout page when timeleft = 0.

alert() modal, stops javascript execution. check code:

var start = new date(); var start2; window.settimeout(function() {     var end = new date();     var result = "time start: " + (end.gettime() - start.gettime())     result += "\ntime alert: " + (end.gettime() - start2.gettime())     result += "\nalert open for: " + (start2.gettime() - start.gettime())     alert(result); }, 500); window.settimeout(function() {     alert("hello");     start2 = new date(); }, 100); 

fiddle upper code: http://jsfiddle.net/aorcsik/vfeh2/1/

check out code, shows settimeout stopped during alert(), can check how time user looking @ alert, , update counter (timeleft) decreasing measured time devided ticker delay.

solution: solution measure how time user looks @ alert modal, , whenever clicks ok, check if session ended, if yes redirect logout, else usual redirect.

var start = new date(); alert("xxx"); var t = (new date()).getdate() - start.getdate(); if (t / 1000 > timeleft) {     /* logout */ } else {     /* redirect */ } 

note: solution use html popup instead of javascript alert, not block javascript execution