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Editorial Team
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Asked: 2026-05-24T05:52:12+00:00

I want to create a timer/alert in my website that prompts the user that

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I want to create a timer/alert in my website that prompts the user that its 1 hour since you logged in.
The timer shouldn’t start from beginning when the page is refreshed. I tried using

setTimeout(function(){
  alert('signout!!');
}, 10000);

It works fine as long as I don’t refresh the page. Any ideas are welcome. Is there any way to calculate the time from db? Im storing the log in time in db.

Thanks

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1 Answer

  1. Editorial Team

    I got the solution like this.
    In <head> tag 

    <?php
                $cur_id = $_SESSION["cur_id"];      
                $st="select crStarttime, ADDTIME(crStarttime, '1:00:00') as en from callrecord where crID  = '$cur_id'";
                $rt = mysql_query($st);
                $r = mysql_fetch_array($rt);
                $starttime = $r['crStarttime'];
                $endtime=$r['en'];
            ?>      
            <script>
                var endtime = "<?php echo $endtime;?>";
            </script>
            <script type="text/javascript">
                function startTime()
                {
                    var today=new Date();
                    var h=today.getHours();
                    var m=today.getMinutes();
                    var s=today.getSeconds();
                    // add a zero in front of numbers<10
                    m=checkTime(m);
                    s=checkTime(s);
                    document.getElementById('txt').innerHTML=h+":"+m+":"+s;
                    var curtime =h+":"+m+":"+s; 
                    t=setTimeout('startTime()',500);
                    if(curtime==endtime)
                    {                   
                        alert("Time to signout.");
                    }                       

                }
                function checkTime(i)
                {
                    if (i<10)
                    {
                        i="0" + i;
                    }
                    return i;
                }
            </script>

    Then in the body

    <div id="txt"></div> // just to print the current time.
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