var today = new Date();
var year = today.getYear();
var month = today.getMonth() + 1;
var date = today.getDate();
var day = today.getDay();
var week = new Array(7);
week[0] = "日";
week[1] = "一";
week[2] = "二";
week[3] = "三";
week[4] = "四";
week[5] = "五";
week[6] = "六";

var strDate = "" + year + " 年 " + month + " 月 "  + date + " 日 " + "星期" + week[day];
document.write( strDate );