代码如下：

var mydate=new Date();

document.write(mydate.getFullYear()+"年");

document.write(mydate.getMonth()+"月");

document.write(mydate.getDate()+"日");

var weekday=["星期日","星期一","星期二","星期三","星期四","星期五","星期六"]

document.write(weekday[mydate.getDay()]+" ");

document.write(new Date().toLocaleString());

结果:2017年3月3日星期一 2017/4/3 下午2:11:19

注:本地时间未更改，时间是对的。