js获取星期
<script>
var a=new Date();//定义日期对象
var weekday=["星期日","星期一","星期二","星期三","星期四","星期五","星期六"];//定义数组对象,给每个数组项赋值
var mynum=a.getDay();//返回值存储在变量mynum中
document.write(a.getDay());//输出getDay()获取值
document.write("今天是："+ weekday[mynum]+"<br/><br/>");//输出星期几
</script>
js获取年月日星期
<script>
function sj(a){var d=new Date();
d.setDate(d.getDate()+a);
var weekday=["星期日","星期一","星期二","星期三","星期四","星期五","星期六"];
xq=weekday[d.getDay()]
var n=d.getFullYear();
var y=d.getMonth()+1;
var r=d.getDate()
return n+"年"+y+"月"+r+"日"+xq
}
document.write(sj(0))
</script>
