console
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("------------------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("今天是"+week[oToday.getDay()]);
writeDocument("------------------请你打印'今天是2019年6月1日 星期六 15：59：59：99'------------------");
var myDate=new Date();
myDate.setFullYear(2019);
myDate.setMonth(6);
myDate.setDate(1);
myDate.setHours(15);
myDate.setMinutes(59);
myDate.setSeconds(59,99);
writeDocument("今天是"+myDate.getFullYear()+"年"+myDate.getMonth()+"月"+myDate.getDate()+"日"+week[myDate.getDay()+5]+myDate.getHours()+":"+myDate.getMinutes()+":"+myDate.getSeconds(59));
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<script>
</script>
</head>
<body>
</body>
</html>