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("时"+oToday.getMinutes());
writeDocument("时"+oToday.getSeconds());

writeDocument("设置时间对象的年，月，日，时，分，秒（2019-6-1 11:30:58 888）------")
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("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);
writeDocument("今天是" +oDate.getFullYear()
                +"年"+(oDate.getMonth()+1)
                +"月"+oDate.getDate()
                +"日"+week[oDate.getDay()]+""
                +oDate.getHours()+":"+oDate.getMinutes());