具有多个字符串值的Typescript枚举

因此,与其创建枚举,不如用这种格式创建一个对象。

export let RewardCategory = { 
  swapPoints:  {variable: 'swapPoints', display: 'Swap Points' },
  charity: {variable: 'charity', display: 'Charity' },
  discountVouchers: {variable: 'discountVouchers', display: 'Discount Vouchers' }
}

然后,包括thisEnum布局。

export interface EnumLayout {
    variable: string;
    display: string;
}

那么,就这样用吧。

 (<EnumLayout>RewardCategory['swapPoints']).display 

 (<EnumLayout>RewardCategory['swapPoints']).variable

您可以使用带有私有构造函数的类,而不是创建接口或枚举。创造 static readonly 类的实例。

export class RewardCategory {
  public static readonly swapPoints = new RewardCategory('swapPoints', 'Swap Points');
  public static readonly charity = new RewardCategory('charity', 'Charity');
  public static readonly discountVouchers = new RewardCategory('discountVouchers', 'Discount Vouchers');

  private constructor(public readonly variable: string, public readonly displayName: string) {
  }
}

你可以这样使用它:

RewardCategory.charity.displayName

RewardCategory.charity.variable

枚举被编码为普通javascript对象,因此您可以执行以下操作:

enum Numbers {
    one = 'number one',
    two = 'the second number'
}

for (const key in Numbers)
    console.log(`key: ${key}, value: ${Numbers[key]}`);

function getTheKeyFromTheValue(value: string) {
    for (const key in Numbers)
        if (Numbers[key] === value)
            return key;

    return undefined; // Couldn't find it
}