var isMonth = new Array
("1月","2月","3月","4月","5月","6月",
"7月","8月","9月","10月","11月","12月");
var isDay = new Array("星期日","星期一",
"星期二", "星期三", "星期四","星期五",
"星期六","星期日");
定义两个数组及其所包含的元素。
today = new Date () ;
Year=today.getYear();
Date=today.getDate();
获得当前的日期年份和日期。
if (document.all)
document.title="今天是: "+Year+"年"+
isMonth[today.getMonth()]+
Date+"日"+isDay[today.getDay()]