DOCTYPE HTML html body style hours color red minutes color green secon

  • Anonymous
  • NA
  • 22 Mar 2014 
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<!DOCTYPE HTML>

<html>

<body>

    <style>

        .hours{

            color:red;

        }

        .minutes{

            color:green;

        }

        .seconds{

            color:blue;

        }

    </style>

    <div id="clock">

        <span class="hours">00:</span>

        <span class="minutes">00:</span>

        <span class="seconds">00</span>

        <input class="start" type="button" onclick="clockStart()" value="Start">

        <input class="stop" type="button" onclick="clockStop()" value="Stop">

    </div>

    

    <script>

        var ss = 0;

        var mm = 0;

        var hh = 0;

        var timerID;

        function clockOn(){

            ss++;

            var clock = document.getElementById("clock");

            if (ss == 60){

                ss = 0;

                mm++;

            }

            if (hh < 10)

                h0 = "0";

            else

                h0 = null;

            if (mm < 10)

                m0 = "0";

            else

                m0 = null;

            if (ss < 10)

                s0 = "0";

            else

                s0 = null;

            clock.children[0].innerHTML = h0 + hh + ":";

            clock.children[1].innerHTML = m0 + mm + ":";

            clock.children[2].innerHTML = s0 + ss;

        }

        function clockStart(){

            if (timerID)

                return;

            timerID = setInterval(clockOn, 1000);

        }

        function clockStop(){

            clearInterval(timerID);

            timerID = null;

        }

    </script>

</body>

</html>
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