JavaScript--时间显示小插件
JS调用系统时间，显示在当前页面上，利用DOM操作节点来实现动态刷新
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>JavaScript window对象常用方法及事件</title>
</head>
<body>
<script type="text/javascript">
function setDateTime(){
var date=new Date();
var day=date.getDay();
var week;
switch(day){
case 0:week="星期日";break;
case 1:week="星期一";break;
case 2:week="星期二";break;
case 3:week="星期三";break;
case 4:week="星期四";break;
case 5:week="星期五";break;
case 6:week="星期六";break;
}
var today=date.getFullYear()+"年"+(date.getMonth()+1)+"月"+date.getDate()+"日 "+week+" "+date.getHours()+":"+date.getMinutes()+":"+date.getSeconds();
document.getElementById("today").innerHTML=today;
}
window.setInterval("setDateTime()", 1000);
</script>
<div id="today"></div>
</body>
</html>