javascript - 有没有比 "if-else"链更短的赋值方法？

Question

现在，我的代码是这样的:

var day = getDay(); //A function that gets this current day of the week as integer
var dayname = "";
if (day==0) dayname = "Su";
if (day==1) dayname = "Mo";
...
if(day==6) dayname = "Sa";

它有效，但我觉得它可以更短，像这样:

if (day == (0,1,2,3,4,5,6)) dayname = ("Su","Mo",...,"Sa");

有办法做到这一点吗？

Answer 1

var days = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];
var dayname = days[getDay()];