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JavaScript & TypeScript

Generics

/dʒɪˈnerɪks/

Definition

A TypeScript feature allowing functions, classes, and interfaces to work with multiple types while preserving type information.

Example in context

"function identity<T>(arg: T): T returns the same type as input — call it with a string, get a string back."

Related terms

  • Utility types — Built-in TypeScript generic types for common transformations: Partial<T>, Required<T>, Pick<T,K>, Omit<T,K>.

Practice this term

Master Generics in context by working through exercises in the JavaScript & TypeScript module. You'll see the term used in real engineering scenarios with multiple-choice, fill-in-the-blank, and matching drills.

Practice in exercises → Browse all words

Frequently Asked Questions

What does "Generics" mean?

A TypeScript feature allowing functions, classes, and interfaces to work with multiple types while preserving type information.

How do you pronounce "Generics"?

"Generics" is pronounced /dʒɪˈnerɪks/.

Can you use "Generics" in a sentence?

"function identity<T>(arg: T): T returns the same type as input — call it with a string, get a string back."