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TypeScript enum

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Faris Abuali answered on May 28, 2020 Popularity 10/10 Helpfulness 2/10

answer TypeScript enum

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TypeScript enum

Comment

enum Direction {
  Up = 1,
  Down,
  Left,
  Right,
}
We’ll first start off with numeric enums, which are probably more familiar if you’re coming from other languages. An enum can be defined using the enum keyword.

If we wanted, we could leave off the initializers entirely:
enum Direction {
  Up,
  Down,
  Left,
  Right,
}
  
enum Direction {
  Up = "UP",
  Down = "DOWN",
  Left = "LEFT",
  Right = "RIGHT",
}

Popularity 10/10 Helpfulness 2/10 Language typescript

Source: www.typescriptlang.org

Tags: typescript

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Contributed on Apr 20 2022

Faris Abuali

0 Answers Avg Quality 2/10

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ts enum

Comment

// String enum 
enum Direction {
  Up = "UP",
  Down = "DOWN",
  Left = "LEFT",
  Right = "RIGHT",
}

// Numeric enums
enum Direction {
  Up = 1,
  Down,
  Left,
  Right,
}

Popularity 10/10 Helpfulness 5/10 Language typescript

Source: www.typescriptlang.org

Tags: typescript t

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Contributed on Nov 06 2022

Long Lemur

0 Answers Avg Quality 2/10

typescript type from enum values

Comment

enum Weekday {
  MONDAY = 'mon',
  TUESDAY = 'tue',
  WEDNESDAY = 'wed'
}

type WeekdayType = `${Weekday}`;

Popularity 10/10 Helpfulness 5/10 Language typescript

Source: stackoverflow.com

Tags: typescript t

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Contributed on Feb 11 2021

Lively Lark

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enum ts

Comment

export enum Gender {
	MALE = 'male',
	FEMALE = 'female',
	OTHER = 'other',
}

Popularity 9/10 Helpfulness 5/10 Language typescript

Source: Grepper

Tags: typescript t

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Contributed on Jun 07 2024

Murtin

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enum typescript

Comment

enum Provider {"google", "linkedin", "local"}
interface User {
	authprovider: keyof typeof Provider
}

Popularity 10/10 Helpfulness 3/10 Language typescript

Source: Grepper

Tags: typescript t

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Contributed on Aug 07 2023

Talented Turtle

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enum in ts

Comment

enum Direction {
    Up,
    Down,
    Left,
    Right,
}

Popularity 10/10 Helpfulness 3/10 Language typescript

Source: www.typescriptlang.org

Tags: typescript t

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Contributed on May 28 2020

Unusual Unicorn

0 Answers Avg Quality 2/10

typescript enums

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//All of the following members are auto-incremented from that point on. 
//In other words, Direction.Up has the value 1, Down has 2, Left has 3, and Right has 4.
enum Direction {
  Up = 1, //If Up is not set to 1 will be 0 by default!
  Down, //Down = 2
  Left, //Left = 3
  Right, //Right = 4
}
//String enum
enum Direction {
  Up = "UP",
  Down = "DOWN",
  Left = "LEFT",
  Right = "RIGHT",
}

Popularity 10/10 Helpfulness 3/10 Language typescript

Source: www.typescriptlang.org

Tags: enums enum

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Contributed on Nov 27 2022

Meti

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enum usage typescript

Comment

enum UserResponse {
  No = 0,
  Yes = 1,
}

function respond(recipient: string, message: UserResponse): void {
  console.log(recipient, message); // "Princess Caroline",  1
}

respond("Princess Caroline", UserResponse.Yes);

Popularity 10/10 Helpfulness 2/10 Language typescript

Source: www.typescriptlang.org

Tags: typescript t

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Contributed on Jan 08 2022

shahul

0 Answers Avg Quality 2/10

enums in typescript

Comment

enum Direction {
  Up = 1,
  Down,
  Left,
  Right,
}

Popularity 10/10 Helpfulness 2/10 Language typescript

Source: www.typescriptlang.org

Tags: enums enum

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Contributed on Dec 07 2020

Creepy Gábor

0 Answers Avg Quality 2/10

typescript enum

Comment

enum Sides {LEFT, RIGHT};
Sides.LEFT;  // 0
Sides.RIGHT; // 1

const typeFromEnum: Sides.LEFT = Sides.LEFT; // Enums become types!

console.log(Sides);   // { '0': 'LEFT', '1': 'RIGHT', LEFT: 0, RIGHT: 1 } 

type leftOrRight = keyof typeof Sides; // 'LEFT' | 'RIGHT'

let sideName: string = Sides[0];  // 'LEFT'  reverse mapping


enum EnumWithString {
  X = "XX",
  Y = "YY",
};
console.log(EnumWithString); // { X: 'XX', Y: 'YY' }  no reverse mapping

Popularity 10/10 Helpfulness 2/10 Language typescript

Source: Grepper

Tags: typescript t

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Contributed on Mar 12 2022

Naughty Nightingale

0 Answers Avg Quality 2/10

Typescript enum in js

Comment

var TrafficLight;
(function (TrafficLight) {
  TrafficLight[TrafficLight["RED"] = 0] = "RED";
  TrafficLight[TrafficLight["YELLOW"] = 1] = "YELLOW";
  TrafficLight[TrafficLight["GREEN"] = 2] = "GREEN";
})(TrafficLight || (TrafficLight = {}));

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: chat.openai.com

Tags: javascript j

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Contributed on Jun 23 2023

Grieving Goldfinch

0 Answers Avg Quality 2/10

TypeScript enum

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