将枚举号转换为字符串[重复]

Question

我有一个枚举文件，在其中我为PaymentTypes定义了一个对象：

export enum PaymentTypes {
   Invoice = 1,
   CreditCard = 2,
   PrePayment = 3,
}

 order:
    [
        { "id": 0, "name": "Available", "PaymentType": 1 },
        { "id": 1, "name": "Ready", "PaymentType": 3 },
        { "id": 2, "name": "Started", "PaymentType": 2 }
    ];

这样我就有了可以使用的东西：

orderFiltered:
        [
            { "id": 0, "name": "Available", "PaymentType": "Invoice" },
            { "id": 1, "name": "Ready", "PaymentType": "PrePayment" },
            { "id": 2, "name": "Started", "PaymentType": "CreditCard" }
        ];

Answer 1

您可以使用map创建一个新的对象数组，其中包含原始数据和枚举成员的名称，您可以使用PaymentTypes[PaymentType]获取枚举成员的名称

let order = [
    { "id": 0, "name": "Available", "PaymentType": 1 },
    { "id": 1, "name": "Ready", "PaymentType": 3 },
    { "id": 2, "name": "Started", "PaymentType": 2 }
];

enum PaymentTypes {
   Invoice = 1,
   CreditCard = 2,
   PrePayment = 3,
}
let orderFiltered = order.map(o => Object.assign({}, o, { PaymentTypeDisplayName: PaymentTypes[o.PaymentType] }));
console.log(orderFiltered);

不过，需要注意的一点是，使用枚举成员名作为显示可能不是最友好的使用体验。