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How to use timers in HTML

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How to use timers in HTML

by  Targol  Posted    (Edited  )
To add timers capabilyties to an html page, you'v got to use the window.setInterval method. It's interface is this one :
Code: 
oInterval=window.setInterval(FctToCall, TimeWait)
with
Code: 
  FctToCall :
string containing the name of the function to call
Code: 
  TimeWait :
Time to wait (in milliseconds) before calling
Code: 
FctToCall

Here is an exemple :
Code: 
<Html>
<head>
<Script language="Jscript">
var oInterval;

function RemindMsg(msg) {
  oInterval=window.setInterval("ShowDelayedMsg('" + msg + "')", 2000);
  // function stopTimer() will be called every 2 seconds
  // Note that you can add any parameters to the function call.
}

function ShowDelayedMsg(msg) {
  var oDiv=document.getElementById("container");
  var oldContent = oDiv.innerHTML;
  var curDate=new Date();
  oDiv.innerHTML = oldContent + curDate + " : " + msg + "<BR>";
}

function stopTimer() {
  window.clearInterval(oInterval);
  // the timer is now stopped
}
</script>
</head>
<body>
  <input type="button" value="start timer" onclick="RemindMsg('another message');"/>
  <input type="button" value="stop timer" onclick="stopTimer();"/>
  <div id="container"></div>
</body>
</html>
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