假设您有一个枚举

export enum SCROLL_LABEL_OFFSET {
  SMALL = 48,
  REGULAR = 60,
  LARGE = 112
}

你想要创建一个基于枚举的类型而不仅仅是复制和粘贴。 你可以像这样使用枚举来创建你的类型:

export type ScrollLabelOffset = keyof typeof SCROLL_LABEL_OFFSET;

结果你会收到一个可能值为'SMALL' | 'REGULAR' | 'LARGE'的类型

我发现这个解决方案更优雅:

for (let val in myEnum ) {

 if ( isNaN( parseInt( val )) )
     console.log( val );
}

它显示:

bar 
foo

如果你只搜索名称，然后迭代使用:

Object.keys(myEnum).map(key => myEnum[key]).filter(value => typeof value === 'string') as string[];

简单地说

如果你的枚举如下:

export enum Colors1 {
  Red = 1,
  Green = 2,
  Blue = 3
}

要获得特定的文本和值:

console.log(Colors1.Red); // 1 
console.log(Colors1[Colors1.Red]); // Red

获取值和文本列表:

public getTextAndValues(e: { [s: number]: string }) {
  for (const enumMember in e) {
    if (parseInt(enumMember, 10) >= 0) {
      console.log(e[enumMember]) // Value, such as 1,2,3
      console.log(parseInt(enumMember, 10)) // Text, such as Red,Green,Blue
    }
  }
}
this.getTextAndValues(Colors1)

如果你的枚举如下:

export enum Colors2 {
  Red = "Red",
  Green = "Green",
  Blue = "Blue"
}

要获得特定的文本和值:

console.log(Colors2.Red); // Red
console.log(Colors2["Red"]); // Red

获取值和文本列表:

public getTextAndValues(e: { [s: string]: string }) {
  for (const enumMember in e) {
    console.log(e[enumMember]);// Value, such as Red,Green,Blue
    console.log(enumMember); //  Text, such as Red,Green,Blue
  }
}
this.getTextAndValues(Colors2)

我的Enum是这样的:

export enum UserSorting {
    SortByFullName = "Sort by FullName", 
    SortByLastname = "Sort by Lastame", 
    SortByEmail = "Sort by Email", 
    SortByRoleName = "Sort by Role", 
    SortByCreatedAt = "Sort by Creation date", 
    SortByCreatedBy = "Sort by Author", 
    SortByUpdatedAt = "Sort by Edit date", 
    SortByUpdatedBy = "Sort by Editor", 
}

这样做会返回undefined:

UserSorting[UserSorting.SortByUpdatedAt]

为了解决这个问题，我选择了另一种使用管道的方法:

import { Pipe, PipeTransform } from '@angular/core';

@Pipe({
    name: 'enumKey'
})
export class EnumKeyPipe implements PipeTransform {

  transform(value, args: string[] = null): any {
    let enumValue = args[0];
    var keys = Object.keys(value);
    var values = Object.values(value);
    for (var i = 0; i < keys.length; i++) {
      if (values[i] == enumValue) {
        return keys[i];
      }
    }
    return null;
    }
}

要使用它:

return this.enumKeyPipe.transform(UserSorting, [UserSorting.SortByUpdatedAt]);

要获得枚举值的列表，您必须使用:

enum AnimalEnum {
  DOG = "dog", 
  CAT = "cat", 
  MOUSE = "mouse"
}

Object.values(AnimalEnum);