TypeScript Academy · Lesson

Primitive Types & Annotations

Understand TypeScript primitive types and how to annotate variables.

Intro to Primitives

Goal: Explore primitive types (string, number, boolean, null, undefined, bigint, symbol) and annotate variables clearly.

string and number are the most common primitive types. Use annotations for clarity when needed.

let title: string = "TypeScript";
let version: number = 5.4;
console.log(title, version);