Object.values 似乎不适用于枚举类型

Question

我在我的应用程序中定义了这个枚举：

export enum Status {
    BOOKED = 'B',
    FREE = 'F',
}

然后我在控制台上添加这条消息

console.log ('<------------------------------------>');
        console.log (code.value);
        console.log (Object.values(Status));
        console.log (code.value in Object.values(Status));
        console.log ('<------------------------------------>');

 <------------------------------------>

我在控制台上看到了这个，code.value 不包含在枚举中；我应该看到 true

    B
    [ 'B', 'F' ]
   false

Answer 1

你有这个对象

export enum Status {
    BOOKED = 'B',
    FREE = 'F',
}

Object.values(Status) 会给你 [ 'B', 'F' ] 这是预期的

阅读此内容了解更多信息 -

The Object.values() method returns an array of a given object's own enumerable property values, in the same order as that provided by a for...in loop. (The only difference is that a for...in loop enumerates properties in the prototype chain as well.)

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/values

Answer 2

您应该使用 array.include() 来检查数组是否包含值 https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/includes

const values = Object.values(Status);
console.log(values.includes(code.value));

Object.values 似乎不适用于枚举类型

Object.values seems not to work in enum type

javascript

enums

enumeration

node.js

typescript