Enums

Enums define a set of named constants. Numeric enums auto-increment.

Syntax

TYPESCRIPT

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enum Direction {
    Up,
    Down,
    Left,
    Right
}

enum Status {
    Active = "ACTIVE",
    Inactive = "INACTIVE"
}

TypeScript Enums

TYPESCRIPT

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enum Status {
    Active = "ACTIVE",
    Inactive = "INACTIVE",
    Pending = "PENDING"
}

enum Color {
    Red = 0,
    Green = 1,
    Blue = 2
}

let userStatus: Status = Status.Active;
console.log(userStatus);

let primary: Color = Color.Red;
console.log(Color[primary]);

Try It Yourself

Practice

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Exercise

Practice this concept.

Answer

Write the code as shown above.

Quick Quiz

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What did you learn?

Concept A

Concept B

Concept C

Concept D

This covers the basics.

Retry Quiz

Interview Questions

Explain this concept.

It is a fundamental TypeScript feature.

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