為什么就算我沒有添加 setInterval(clock,100);一樣會顯示動態(tài)時間?。?/h1>
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>定時器</title>
<script type="text/javascript">
? var attime;
? var atti;
? function clock(){
? ? var time=new Date(); ? ? ? ? ?
? ? attime= time.getHours()+"時:"+time.getMinutes()+"分:"+time.getSeconds()+"秒";
? ? document.getElementById("clock").value =attime;
? ? }
? setInterval(clock,1000);
? ??
</script>
</head>
<body>
<form>
<input type="text" id="clock" size="50" ?/>
</form>
</body>
</html>
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>定時器</title>
<script type="text/javascript">
? var attime;
? var atti;
? function clock(){
? ? var time=new Date(); ? ? ? ? ?
? ? attime= time.getHours()+"時:"+time.getMinutes()+"分:"+time.getSeconds()+"秒";
? ? document.getElementById("clock").value =attime;
? ? }
? setInterval(clock,1000);
? ??
</script>
</head>
<body>
<form>
<input type="text" id="clock" size="50" ?/>
</form>
</body>
</html>
2019-06-18
你下面不是加了setInterval定時調(diào)用嗎？你不加不調(diào)用clock方法它連時間都不顯示