javascript动态显示年月日星期时分秒

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<h1 id="date_time"></h1>
<script type="text/javascript">
function getWeek(option){
// switch(option){
// case 0:
// return "星期日";
// case 1:
// return "星期一";
// case 2:
// return "星期二";
// case 3:
// return "星期三";
// case 4:
// return "星期四";
// case 5:
// return "星期五";
// case 6:
// return "星期六";
// }

var week = "日一二三四五六".charAt(option);
return "星期"+week;
}
function showtime(){
var datetime= new Date();
var year= datetime.getFullYear();
var month= datetime.getMonth()+1;
month= month<10?"0"+month:month;
var day= datetime.getDate();
day= day<10?"0"+day:day;
var hour = datetime.getHours();
hour= hour<10?"0"+hour:hour;
var minute= datetime.getMinutes();
minute= minute<10?"0"+minute:minute;
var second= datetime.getSeconds();
second= second<10?"0"+ second: second;
var w=datetime.getDay();
var week = getWeek(w)
datetime=year+"年"+month+"月"+day+"日"+week+""+hour+""+"时"+minute+"分"+second+"秒";
document.getElementById("date_time").innerHTML=datetime;
}
showtime();
setInterval("showtime()",1000);//间隔多少毫秒执行一次方法
</script>
</body>
</html>

Posted on 2021-06-04 15:20  lezai0514  阅读(86)  评论(0)    收藏  举报