Textbox Color if Value=

Hi

I am kinda a noob when it comes to coding, but I have been doing some html, javascript etc. I'm creating a stopwatch (using a code I found and edited a little bit) But I need to make one change, I want the text box's to change form one color to another when the time goes past 900seconds, or 15 minutes. Here is the script I'm using...

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<html>

<head>
 
</head>
 
<body bgcolor="#000000">
 
<center>
 
<font color="#FFFFFF">

<h2>Stopwatch</h2>

</font>
 
<form name=exf1> <font color="#FFFFFF"><b>

H: <input size=1 type=text name=hour  value="0" onfocus=blur()>&nbsp;
 
M:  <input size=2 type=text name=tmin   value="0" onfocus=blur()>&nbsp;
 
S:  <input size=3 type=text name=sec   value="0" onfocus=blur()>&nbsp;
 
</b></font>
 
<br><br>
 
<input type=button value="Start / Reset" onclick="startIt()">

<input type=button value="Stop" onclick="stopTimers()">

</form>
 
<script>

var _myTimer_ms = null;

var _myTimer_s  = null;

var _myTimer_m  = null;

var _myTimer_h  = null;

function updateS()  { document.exf1.sec.value   = (1+parseInt(document.exf1.sec.value))  }

function updateM()  { document.exf1.tmin.value  = (1+parseInt(document.exf1.tmin.value))  }

function updateH()  { document.exf1.hour.value  = (1+parseInt(document.exf1.hour.value));  }

function startIt() {

  stopTimers();

  resetTime();

  _myTimer_s  = setInterval("updateS()",1000);

  _myTimer_m  = setInterval("updateM()",1000*60);

  _myTimer_h  = setInterval("updateH()",1000*60*60);

}

function stopTimers() {

  clearInterval(_myTimer_s);

  clearInterval(_myTimer_m);

  clearInterval(_myTimer_h);

}

function resetTime() {

  document.exf1.sec.value=0;

  document.exf1.tmin.value=0;

  document.exf1.hour.value=0;

}
 
</script>
 
</center>
 
</body>

</html>

I'm sure this would be possible with a If function, but I learn C++ back in the day(not a lot) and the one i wrote, for C, did not convert well. any help would be appreciated.

Thank You
Kirt

Mar 10 '08 #1

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16,027

Expert Mod 8TB

To change the colour, use formElement.style.color = 'the color' where formElement is the element to change. You can use setTimeout to call the function to change it after 1000*60*15 milliseconds.

Mar 10 '08 #2

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