String enum

Learn more readable values with string enums.

String enum

In a string enum, each member has a string value and you must assign a string to every member explicitly. At runtime, the member's value is readable text rather than a number.

enum Durum { Acik = "acik", Kapali = "kapali" }
console.log(Durum.Acik);  // "acik"

A string enum produces meaningful values in logs and data transfer.

Why use a string enum?

A string enum gives readable values at runtime. When you log a numeric enum you see a number, but with a string enum the member's meaning appears directly as text. This makes debugging and data sharing easier.

enum Rol { Admin = "admin", Uye = "uye" }
console.log(Rol.Admin);  // "admin"

Seeing meaningful text instead of numbers makes tracing and understanding easier.

Exercise Define the role constant

Define a const named Rol mapping Admin to "admin" and Uye to "uye" (string enum behavior). Print the value of Rol.Admin with console.log.

Show example solution

const Rol = { Admin: "admin", Uye: "uye" };
console.log(Rol.Admin);

Test yourself

Which is a valid string enum definition?
- enum Durum { "acik", "kapali" }
- enum Durum { Acik, Kapali }
- enum Durum { Acik = 1, Kapali = 2 }
- enum Durum { Acik = "acik", Kapali = "kapali" }
Show answer

enum Durum { Acik = "acik", Kapali = "kapali" } — In a string enum, every member must be assigned a string; <code>Acik = "acik", Kapali = "kapali"</code> is the correct definition. The others are either numeric or invalid syntax.

Complete the string enum member

enum Renk { Kirmizi = "kirmizi", Mavi = ____ }

Show answer

enum Renk { Kirmizi = "kirmizi", Mavi = "mavi" }

String enum concepts

enum Durum { A = "a" }

String-valued member
String enum

Each member must be assigned a string
Durum.Acik

Returns a string at runtime
Dize enum

Produces a readable value

Next lesson: const enum

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