What is an enum in TypeScript?

Difficulty: 5/10

enum declaration, numeric vs string enums, enum interoperability

In TypeScript, an Enum (short for enumeration) is a way of defining a set of named constant values. It helps organize related values that belong together and allows you to use these named values instead of hardcoding magic numbers or strings, making your code more readable and maintainable.

Types of enums:

1
Numeric Enums: By default, enums start with a numeric value of and auto-increment.
2
String Enums: In string enums, each member is explicitly assigned a string value.
3
Heterogeneous Enums: You can mix string and numeric values within the same enum (though it's less common).

Enums are used when you have a fixed number of related values in your program. Here are a few scenarios where enums come in handy:

javascript

0-2 years experience

2-5 years experience

Difficulty: 5/10

enum declaration, numeric vs string enums, enum interoperability

Types of enums:

1
Numeric Enums: By default, enums start with a numeric value of and auto-increment.
2
String Enums: In string enums, each member is explicitly assigned a string value.
3
Heterogeneous Enums: You can mix string and numeric values within the same enum (though it's less common).

Enums are used when you have a fixed number of related values in your program. Here are a few scenarios where enums come in handy:

javascript

0-2 years experience

2-5 years experience