TypeScript Enums

What are Enums?

Enums define a set of named constant values.

They make code easier to read and manage.

Numeric Enums

By default, enums use numbers starting from 0.

String Enums

You can assign string values to enums.

Using Enums

Enums in Functions

Enums in Objects

Full Example

Why Enums are Important

• Represent fixed sets of values
• Improve readability
• Reduce errors
• Used in real applications

Common Mistakes

• Mixing numeric and string enums incorrectly
• Not using enums when values are fixed
• Confusing enums with union types

Practice

Create an enum for traffic lights and write a function that prints the meaning.

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