BeginnerLesson 2 of 1825 min 路 hands-on
Type Basics
Part of the TypeScript course
You can already run a .ts file. Now let's meet the basic building blocks: the primitive types TypeScript ships with, plus the two escape hatches (any and unknown) you will read about in real codebases. After this lesson you will know what each one means and which one to reach for first.
A primitive type is the simplest kind of value: a single piece of data with no inner structure. TypeScript's primitives match JavaScript's. ...
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Start this lessonType BasicsWhat you'll learn
- Primitive types
- String
- Number
- Boolean
- Null
- Undefined
- Any
- Unknown
- Type inference
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All lessons in this course
18 lessons- 1Hello, TypeScript20 min
- 2Type Basics25 min
- 3Arrays and Tuples25 min
- 4Object Types and Interfaces25 min
- 5Functions25 min
- 6Union and Literal Types25 min
- 7Type Narrowing30 min
- 8Type Aliases vs Interfaces20 min
- 9Optional, Readonly, and Nullable25 min
- 10Enums20 min
- 11Generics30 min
- 12Classes25 min
- 13Inheritance and Abstract Classes25 min
- 14Modules25 min
- 15Utility Types30 min
- 16Mapped and Conditional Types30 min
- 17Declaration Files and Libraries25 min
- 18tsconfig and the Compiler30 min
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