Array Types

TypeScript supports two array syntaxes: type[] and Array<type>.

Syntax

TYPESCRIPT

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let numbers: number[] = [1, 2, 3];
let names: Array<string> = ["Alice", "Bob"];

Array Types

TYPESCRIPT

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let numbers: number[] = [1, 2, 3, 4, 5];
let names: Array<string> = ["Alice", "Bob"];

numbers.push(6);
console.log(numbers);

let mixed: (string | number)[] = [1, "two", 3];
console.log(mixed);

let matrix: number[][] = [[1, 2], [3, 4]];
console.log(matrix);

Try It Yourself

Practice

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Exercise

Practice this concept.

Answer

Write the code as shown above.

Quick Quiz

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What did you learn?

Concept A

Concept B

Concept C

Concept D

This covers the basics.

Retry Quiz

Interview Questions

Explain this concept.

It is a fundamental TypeScript feature.

Next Lesson

Tuples