<html> <head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script>
x = 0
y = 0
function count1( )
{ x = x+ 1
document.display1.box1.value= x
meter1=setTimeout("count1()", 1000)
}
function count2( )
{ y = y+ 1
document.display2.box2.value= y
meter2=setTimeout("count2()", 1000)
}
</script> </head>
<body bgcolor=lightcyantext=red> <p> </br>
<form name=display1>
<input type="text" name="box1"value="0" size=4 >
<input type=button value="停止计时" onClick="clearTimeout(meter1)" >
<input type=button value="继续计时" onClick="count1() " >
</form>
<p>
<form name=display2>
<input type="text" name="box2"value="0" size=4 >
<input type=button value="停止计时" onClick="clearTimeout(meter2) " >
<input type=button value="继续计时" onClick="count2( ) " >
</form>
<script>
count1( )
count2( )
</script>
</body>
</html>
运行结果
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