<title>计时器</title>
<script type="text/javascript">
var num=0;
function startCount() {
document.getElementById('count').value=num;
num ++;
setTimeout(startCount,1000);
}
var count = setInterval(startCount,1000);
</script>
</head>
<body>
<form>
<input type="text" id="count" onclick = "startCount"/>
为甚么不是从0，1，2，3，这样计数，而是0，2，5，9这样计的，求指点
2019-01-17
<title>计时器</title>
<script type="text/javascript">
var num=0;
function startCount() {
document.getElementById('count').value=num;
num ++;
setTimeout("startCount()",1000);//修改处
}
var count = setTimeout("startCount()",1000);//修改处
</script>
</head>
<body>
<form>
<input type="text" id="count" onclick = "startCount"/>楼上回答应该没实践过，看下我的代码，我认为应该是onclick = "startCount"，的问题，你可以自己再尝试下。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script type="text/javascript">
var num=0;
function startCount() {
document.getElementById('count').value=num;
num ++;
// setTimeout(startCount,1000);
setTimeout("startCount()",1000);
}
var count = setInterval(startCount,1000);
</script>
</head>
<body>
<input type="text" id="count" onclick="startCount()"/>
</body>
</html>
举报
