SOURCE

function writeDocument(variable) {
    document.write(variable + "<br/>");
} 
writeDocument("定义一个时间对象-----------------------------");
var oToday = new Date();
writeDocument(oToday);

writeDocument("获取时间对象的年，月，日，时，分，秒----------");
writeDocument("年："+oToday.getFullYear());
writeDocument("月："+(oToday.getMonth()+1));
writeDocument("日: "+oToday.getDate());
writeDocument("时："+oToday.getHours());
writeDocument("分："+oToday.getMinutes());
writeDocument("秒："+oToday.getSeconds());

writeDocument("获取时间对象的年，月，日，时，分，秒（2019-6-1 11：00：58 888）----------");
var oMyBirthday = new Date();
oMyBirthday.setFullYear(2019);
oMyBirthday.setMonth(5);
oMyBirthday.setDate(1);
oMyBirthday.setHours(11);
oMyBirthday.setMinutes(30);
oMyBirthday.setSeconds(58,888);
writeDocument(oMyBirthday);

writeDocument("获取星期几-------------------");
writeDocument("今天是星期"+oToday.getDay());

var week =["星期天","星期一","星期二","星期三","星期四","星期五","星期六",];

writeDocument("今天是"+week[oToday.getDay()]);

writeDocument("请你打印'今天是2022年3月22日 星期二 8:55 ' ----------------"); 


var oDate=new Date(2022, 2 , 22 , 8 , 55 , 15 , 800); 
writeDocument("今天是"+oDate);


writeDocument("请你打印'今天是2022年3月22日 星期二 8:55 ' ----------------"); 
var today = new Date();
today.getDay(2);
today.setFullYear(2022);
today.setMonth(2);
today.setDate(22);
today.setHours(8);
today.setMinutes(55);
today.setSeconds(58,888);
writeDocument(today);