CODEWITHSUNDEEP
javascript
Siddharth Pujara
Siddharth Pujara

Reputation: 135

Logout after the Timer Expires

I am using the below to count milliseconds, it works perfectly well. But I want to call a logout() when the timer value is 9 seconds. It does not work. Can you anyone suggest ? 

</script>
<script type="text/javascript">
var timer, time = 0, start_time = 0;
function startstoptimer() 
{
   if (timer)
   {
      time += new Date().getTime() - start_time;
      start_time = 0;
      clearInterval(timer);
      timer = null;
   } 
   else 
   {
     start_time = new Date().getTime();
     timer = setInterval(function () 
     {

        document.d.d2.value = (time + new Date().getTime() - start_time)/1000;
        if((time + new Date().getTime() - start_time)/1000==9.000)
            logout();  
      }, 10);
    }
}
</script>
<script>
function logout() 
{
alert('Time is up');
}
</script>

Upvotes: 0

Views: 122

Answers (1)

dseminara
dseminara

Reputation: 11935

Beware of unprecise floating point number comparisons, you cannot predict if the comparison can fail due truncation/precision errors caused by floating point arithmetics, I would avoid trust that

This is what I would do:


function startstoptimer() 
{
   if (timer)
   {
      time += new Date().getTime() - start_time;
      start_time = 0;
      clearInterval(timer);
      clearTimeout(launchLogoutTimer); // clear timeout
      timer = null;
   } 
   else 
   {
     start_time = new Date().getTime();
     timer = setInterval(function () 
     {

        document.d.d2.value = (time + new Date().getTime() - start_time)/1000;
        /*if((time + new Date().getTime() - start_time)/1000==9.000)
            logout();// dont call logout here  */
     }, 10);
     // this way, you will be sure logout will be called after 9 seconds
     // (unless you cancel it before using clearTimeout)
     launchLogoutTimer = setTimeout(logout, 9000);
   }
}

Upvotes: 1

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