Javascript Date

Question

获取星期几可以这样写吗，是什么意思，能解释一下吗？

Answer 1

后面那段代码就相当于这样var day = ["星期日","星期一","星期二","星期三","星期四","星期五","星期六"];day[today.getDay()],today.getDay()是0-6的数字，这就相当于访问day数组；如今天是星期日，today.getDay() ==0 ，day[0]就是星期日