為什么點(diǎn)擊按鈕開(kāi)始就不可以
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>計(jì)時(shí)器</title>
</head>
</head>
<body>
<form>
<input type="text" id="count" />
<button onclick="startCount()">點(diǎn)擊開(kāi)始</button>
</form>
<script type="text/javascript">
??? var num=0;
??? function startCount() {
??? document.getElementById('count').value=num;
??? num++;
??? setTimeout(startCount,1000) ;
? }
?
</script>
</body>
</html>
2015-07-03
你那個(gè)button ?不能這么寫(xiě)啊 ? ?要這樣<input type="button" value="開(kāi)始" onclick="startCount()"/>
2015-07-03
<script type="text/javascript">
? var num=0;
? function startCount() {
? ? document.getElementById('count').value=num;
? ? num++;
? ? setTimeout(startCount,1000);
? }
??
</script>
</head>
<body>
<form>
<input type="text" id="count" />
<input type="button" value="開(kāi)始" onclick="startCount()"/>
</form>
</body>
</html>
完全可以啊 ?我照你的寫(xiě)了遍
2015-06-30
不可以就不可以，管他呢