var currentDate = new Date();

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(

currentDate.getFullYear() + "年" +

(currentDate.getMonth() + 1) + "月" +

currentDate.getDate() + "日" + " " +

weekday[currentDate.getDay()]

);