typescript - 如何理解 TS 代码解析的结果？

Question

我有一个枚举类型，如下：

enum Days {Sun, Mon, Tue, Wed, Thu, Fri, Sat};

实际上，上面是被解析的：

var Days;
(function (Days) {
    Days[Days["Sun"] = 0] = "Sun";
    Days[Days["Mon"] = 1] = "Mon";
    Days[Days["Tue"] = 2] = "Tue";
    Days[Days["Wed"] = 3] = "Wed";
    Days[Days["Thu"] = 4] = "Thu";
    Days[Days["Fri"] = 5] = "Fri";
    Days[Days["Sat"] = 6] = "Sat";
})(Days || (Days = {}));

我很好奇是否Days["Sun"] = 0返回 0Days["Mon"] = 1与否？谢谢。

标签： typescript

Answer 1

我很好奇 Days["Sun"] = 0 是否返回 0 和 Days["Mon"] = 1

是的，它确实。这是将字符串转换为枚举成员的设计和标准方式。