date

 function showweek() //显示中文星期
{
    now = new Date() //定义新对象，new具有Date的性质
　　if (now.getDay() == 0) return ("星期日")
　　if (now.getDay() == 1) return ("星期一")
　　if (now.getDay() == 2) return ("星期二")
　　if (now.getDay() == 3) return ("星期三")
　　if (now.getDay() == 4) return ("星期四")
　　if (now.getDay() == 5) return ("星期五")
　　if (now.getDay() == 6) return ("星期六")
}

function showdate() //显示系统日期
{

　　var now=new Date();

　　var year = now.getYear();

　　var month = now.getMonth()+1;

　　var day = now.getDate();

　　return year+"年"+month+"月"+day+"日";
}