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，分，秒");
writeDocument("年："+oToday.getFullYear());
writeDocument("月："+oToday.getMonth());
writeDocument("日："+oToday.getDate());
writeDocument("时："+oToday.getHours());
writeDocument("分："+oToday.getMinutes());
writeDocument("秒："+oToday.getSeconds());

writeDocument("设置时间对象的年，月，日，分，秒（2019-6-1 11：30：58： 888）")
var oMybirthday=new Date();
oMybirthday.setFullYear(2022);
oMybirthday.setMonth(3);
oMybirthday.setDate(22);
oMybirthday.setHours(8);
oMybirthday.setMinutes(55);
oMybirthday.setSeconds(000);

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("打印今天是"+oMybirthday)