SOURCE

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

writeDocument("定义时间对象"+"--------------------");

var oldtoday=new Date();

writeDocument(oldtoday);

writeDocument(oldtoday.getFullYear());

writeDocument(oldtoday.getMonth()+1);

writeDocument(oldtoday.getDate());

writeDocument(oldtoday.getHours());

writeDocument(oldtoday.getMinutes());

writeDocument(oldtoday.getSeconds());

writeDocument("设置时间年月日时分针"+"------------------------");

var mybirthday=new Date();

mybirthday.setFullYear(2019);

mybirthday.setMonth(3)+1;

mybirthday.setDate(11);

mybirthday.setHours(9);

mybirthday.setMinutes(22);

mybirthday.setSeconds(44);


var arr1=new Array("星期一","星期二","星期三","星期四","星期五","星期六","星期日");

writeDocument(mybirthday+arr1[mybirthday.getDay()]);

var day=new Date();

var arr=new Array("星期一","星期二","星期三","星期四","星期五","星期六","星期日");

day.setFullYear(2020,3,24);
day.setHours(8,45,50);

writeDocument("今天是"+day.getFullYear()+"年"+day.getMonth()+"月"+day.getDate()+"日"+arr[day.getDay()]+"  "+day.getHours()+":"+day.getMinutes());


//打印
var day1=new Date();

var arr2=new Array("星期一","星期二","星期三","星期四","星期五","星期六","星期日");

day1.setFullYear(2019,6,1);
day1.setHours(15,59,59,99);

writeDocument(day1.getFullYear()+"年"+day1.getMonth()+"月"+day1.getDate()+"日"+arr[day.getDay()]+"  "+day1.getHours()+":"+day1.getMinutes()+":"+day1.getSeconds()+":"+day1.getMilliseconds());