Lesson 4 of 6

Arrays & Objects

Model collections and structured data.

Arrays hold ordered values and objects group related properties under named keys.

These structures are foundational when working with API responses and React state.

Example

const skills = ["React", "JavaScript"];
const user = { name: "Asha", city: "Kathmandu" };
console.log(user.city);

Practice challenge

Create an array of three tools and map over it to print each one.