SOURCE

function writeDocument(variable) {
    document.write(variable + "<br/>");
} 

writeDocument("定义一个时间对象-----------------------------");
var oToday = new Date();
writeDocument(oToday);

writeDocument("获取一个时间对象的年，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("设置一个时间对象的年，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 = ["星期日","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); 

oDate.setFullYear(2022, 02, 22);
oDate.setHours(08,55);
writeDocument("今天是" + oDate);

/*writeDocument("今天是" + year[oToday.getFullYear()],month[oToday.getMonth(),day[oToday.getDate()]],week[oToday.getDay()]);

new Date(year, monthIndex [, day [, hours [, minutes [, seconds [, milliseconds]]]]]); */