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IDEN

Explicit Types

Duration: 10 min•Difficulty: Easy•

In TypeScript, we can specify data types explicitly using a colon (:).

Common Types

  • string
  • number
  • boolean
  • any (Avoid this! It disables TypeScript's safety features).
main.ts
const userName: string = "Raffi";
const age: number = 20;
const isDeveloper: boolean = true;
// TypeScript will complain if you try to do this:
// userName = 123; // Error: Type 'number' is not assignable to type 'string'.
console.log(`User: ${userName}, Age: ${age}`);