Objects

JavaScript objects are an almost weirdly versatile collection type. Object literals (POJOs, or "plain old JavaScript objects") are often used to store data in key-value pairs.

const apple = {
  name: "Apple",
  radius: 2,
  color: "red",
};

You can access properties stored on an object using the . operator:

console.log(apple.name); // prints "Apple"
console.log(apple.radius); // prints "2"
console.log(apple.color); // prints "red"

JavaScript objects are interesting because you'll use them the way you'd probably use a map or a dictionary in other languages (simple key-value pairs), but they can also be used for more complex things like classes and prototypes... which we'll get into later.