function fn(){
var time = new Date(); //獲取到當前的時間 Thu Aug 20 2020 12:29:26 GMT+0800 (中國標準時間)
var str= "";
var div = document.getElementById("time"); //獲取到頭部head頁面id是time的節點
// console.log(time);
var year = time.getFullYear(); //回傳當前年份2020
var mon = time.getMonth()+1; //回傳月份 0-11 +1就是回傳當前的月份
var day = time.getDate(); //回傳日份 1-31
var h = time.getHours(); //回傳小時數 1-24
var m = time.getMinutes(); //回傳分鐘 1-60
var s = time.getSeconds(); //回傳秒數 1-60
var week = time.getDay(); // 回傳當前是星期幾 0-6 0是星期天
switch (week){
case 0:week="日";
break;
case 1:week="一";
break;
case 2:week="二";
break;
case 3:week="三";
break;
case 4:week="四";
break;
case 5:week="五";
break;
case 6:week="六";
break;
}
str = year +"年"+totwo(mon)+"月"+totwo(day)+"日"+" "+totwo(h)+":"+totwo(m)+":"+totwo(s)+" "+"星期"+week;
div.innerHTML = str; //給該節點賦值 從而實作動態鬧鐘
}
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