TypeScript tutorialLesson 4Free preview

TS Simple Types

This lesson is part of TypeScript · All levels

Summary

TypeScript provides simple primitive types such as string, number, boolean, bigint, symbol, and P1. This type is declared with an annotation after the variable name so that the input value is expected. With simple type, a data type error can be known before a program is run.

Key points

Primitive major: string, number, boolean, bigint, symbol
Annotations are written with colon after the name
Type checked compiler, not runtime

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