Settimeout cleartimeout problems

Question

Below is my code which redirects the user to the main page after 10sec of inactivity: 

function endAndStartTimer() {

    window.clearTimeout(timer);

    var timer;

    //var millisecBeforeRedirect = 10000; 

    timer = window.setTimeout(function(){alert('Hello!');},10000); 

}

The code works fine. But the timer doesn’t reset after being inactive. Can anyone tell me how to do cleartimeout? 

Answer 1

In your case, since the timer is not declared outside the function it was invoking a new variable on each function. That’s where you faced the issue. 

var timer;

function endAndStartTimer() {

  window.clearTimeout(timer);

  //var millisecBeforeRedirect = 10000; 

  timer = window.setTimeout(function(){alert('Hello!');},10000); 

}

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