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Editorial Team
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Asked: 2026-06-02T09:29:00+00:00

<html> <head> <script language=JavaScript> var c1 = 0; var c2 = 0; var c3

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<html>
    <head>
    <script language="JavaScript">
var c1 = 0;
var c2 = 0;
var c3 = 0;
var o1 = 0;
var o2 = 0;
var o3 = 0;
ID = window.setTimeout("start();", 100);

function start() {
    if (c1 == 59) {
        c1 = 00;;
        if (c2 == 59) {
            c2 = 00;
        }
        else c2++;
    }
    else c1++;

    if (c1 == 0 || c1 == 1 || c1 == 2 || c1 == 3 || c1 == 4 || c1 == 5 || c1 == 6 || c1 == 7 || c1 == 8 || c1 == 9) o1 = "0" + c1;
    else o1 = c1;
    if (c2 == 0 || c2 == 1 || c2 == 2 || c2 == 3 || c2 == 4 || c2 == 5 || c2 == 6 || c2 == 7 || c2 == 8 || c2 == 9) o2 = "0" + c2;
    else o2 = c2;
    if (c3 == 0 || c3 == 1 || c3 == 2 || c3 == 3 || c3 == 4 || c3 == 5 || c3 == 6 || c3 == 7 || c3 == 8 || c3 == 9) o3 = "0" + c3;
    else o3 = c3;

    document.forms[0].elements[0].value = o3 + ":" + o2 + ":" + o1;
    ID = window.setTimeout("start();", 100);
}​
</script>
    </head>
    <body>
        <form name="frm1">
            <input type="text" name="timer1">
            <input type="button" name="but1" value="start" onClick="c1=0; c2=0; c3=0; o1=0; o2=0; 

o3=0; start();">
            <input type=button name="but2" value="stop" onClick="window.clearTimeout(ID);">
        </form>
    </body>
</html>​

Live demo here.

Status Bar gives the error: Object doesn’t support this action.

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1 Answer

  1. Editorial Team

    You get the error in Internet Explorer because there is already a variable start in use, either by the browser itself, or by jsFiddle. After you have used it to define the function, it’s for some reason changed into a variable containing the string "fileopen".

    If you rename the function start to something else, it works:

    http://jsfiddle.net/Guffa/yqsmy/

    Anyhow, you should rather use an interval instead of a timeout for this:

    Javascript:

    var c1, c2, c3, ID = null;
startTimer();

function startTimer() {
    if (ID != null) {
        stopTimer();
    }
    c1 = 0;
    c2 = 0;
    c3 = 0;
    ID = window.setInterval(run, 100);
}

function stopTimer() {
    window.clearInterval(ID);
    ID = null;
}

function run() {
    c1++;
    if (c1 == 60) {
        c1 = 0;
        c2++;
        if (c2 == 60) {
            c2 = 0;
        }
    }

    var o1 = (c1 <= 9 ? "0" : "")  + c1;
    var o2 = (c2 <= 9 ? "0" : "")  + c2;
    var o3 = (c3 <= 9 ? "0" : "")  + c3;
    document.forms[0].elements[0].value = o3 + ":" + o2 + ":" + o1;
}

    HTML:

    <form name="frm1">
  <input type="text" name="timer1">
  <input type="button" name="but1" value="start" onclick="startTimer();">
  <input type="button" name="but2" value="stop" onclick="stopTimer();">
</form>

    Demo: http://jsfiddle.net/Guffa/B4a54/7/

    If you want the timer to be exact, you should save the start time in a variable, then subtract that from the current time to get the elapsed time, and only use the interval to display the elapsed time.

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