TypeScript中的枚舉

Question

我在Typescript中使用枚舉時遇到問題。

export enum RegistrationStatusEnum {
        Pending,
        Rejected,
        Approved,
        InManagement,
    }

UserDTO.ts

import { RegistrationStatusEnum } from "../../Enums/RegistrationStatusEnum";

export class UserDTO {
  Name: string
  RegistrationStatus: RegistrationStatusEnum
}

其他TS

disableStatus(currentUser: UserDTO):boolean
    return currentUser.RegistrationStatus.Pending || currentUser.RegistrationStatus.Rejected || currentUser.RegistrationStatus.InManagement;
}

當我嘗試訪問Pending或其他枚舉時，收到錯誤消息“ RegistrationStatusEnum”類型中不存在“ Pending”屬性，這是怎么回事？ 謝謝！

Answer 1

currentUser.RegistrationStatus是一個枚舉值，可以是枚舉成員之一，但是要檢查您是否需要使用===運算符並與枚舉中的特定字段進行比較：

disableStatus(currentUser: UserDTO): boolean {
    return currentUser.RegistrationStatus === RegistrationStatusEnum.Pending 
        || currentUser.RegistrationStatus === RegistrationStatusEnum.Rejected 
        || currentUser.RegistrationStatus === RegistrationStatusEnum.InManagement;
}