Question

我有一个看起来像这样的打字稿枚举：

enum State {
    NotRequired,
    Working,
    PendingReview,
    Reviewed,
    Done
}

这就产生了这个：

var State;
(function (State) {
    State[State["NotRequired"] = 0] = "NotRequired";
    State[State["Working"] = 1] = "Working";
    State[State["PendingReview"] = 2] = "PendingReview";
    State[State["Reviewed"] = 3] = "Reviewed";
    State[State["Done"] = 4] = "Done";
})(State || (State = {}));

我希望将值设置为带有空格的字符串。

因此State[State["PendingReview"] = 2] = "PendingReview";将成为State[State["PendingReview"] = 2] = "Pending Review";

我已经设法通过如此定义我的枚举来实现与此类似的东西：

enum State {
    "Not Required",
    Working,
    "Pending Review",
    Reviewed,
    Done
}

然而，这有一个缺点，即在代码中使用任何枚举值时，我现在必须使用我的密钥。

现在必须像State.PendingReview

一样使用State["Pending Review"]

我可以通过某种方式为我的键定义另一个显示字符串，从而获得两全其美的效果吗？

因此，当我说State[State.PendingReview]时，它会给我"Pending Review"

的值

Answer 1

由于枚举不支持字符串值，使用像这样的静态字段的类会更好。

您有编辑检查，就像使用枚举一样，您也可以在代码中以相同的方式调用它。

module rizze.tests {


enum State{
     NotRequiered,
     Working,
     Pending,
     Reviewed,
     Done
}

class StateConvert {
    static NotRequiered="Not Required";
    static Working="I'm Working";
    static Pending = "Pending Review";
    static Reviewed="Reviewed Done";
    static Done="Done All";

    static convert(state:State):String{
        if( state == null) return null;
        switch(state){
            case State.NotRequiered:{return StateConvert.NotRequiered;}
            case State.Working:{return StateConvert.Working;}
            case State.Pending:{return StateConvert.Pending;}
            case State.Reviewed:{return StateConvert.Reviewed;}
            case State.Done:{return StateConvert.Done;}

        }
          console.log("Error state  undefined + " +state );
          return null;  

    }
}





 export class StateTest {

      constructor(){
         let state:State = State.Reviewed;
         console.log("state:"+state + " / " + StateConvert.convert(state));   

      }

  }

//TEST
let s:StateTest= new StateTest();

}

Answer 2

由于您没有为枚举指定显式值，您也可以为此使用字符串枚举（从 TypeScript 2.4 开始可用）：

enum State {
  NotRequired = "Not Required",
  Working = "Working",
  PendingReview = "Pending Review",
  Reviewed = "Reviewed",
  Done = "Done"
}

显示值然后简单地变成例如State.NotRequired。

Answer 3

通过某种方式定义另一种选择，我能否拥有两全其美的优势将字符串显示到我的密钥？

没有。 TypeScript不支持此功能。如果您认为这样做有价值，可以尝试制作feature request。

创建显示值为

3 个答案: