<title>计时器</title>
</head>
<script type="text/javascript">
var num=0;
var i;
function startCount(){
document.getElementById('count').value=num;
num=num+1;
i=setTimeout("startCount()",1000);
}
function stopCount(){
clearTimeout(i);
}
function newCount(){
num=0;
function startCount();
}
</script>
</head>
<body>
<form>
<input type="text" id="count" />
<input type="button" value="Start" onclick="startCount()" />
<input type="button" value="Stop" onclick="stopCount()" />
<input type="button" value="重置" onclick="newCount()">
</form>
</body>
</html>
你这个重置的功能，没什么意义啊！要嘛就把id=count的value值在重置时的点击清零，而且newCount（）函数里
为啥又有function starCount（）这玩意