Objects in JavaScript

Introduction Link to heading

An object in JavaScript is a collection of data and functions that are grouped together under a single name. Objects are a fundamental tool for organizing and structuring JavaScript code.

Object creation Link to heading

  • You can create an object using object literal notation, which consists of two curly braces {} and a comma-separated list of properties and values.

Example: Link to heading

const myCar = {
  make: "Toyota",
  model: "Corolla",
  year: 2020,

Access to properties: Link to heading

  • You can access a property of an object using dot notation. or the square bracket notation [].

Example: Link to heading

console.log(myCar.make); // Prints "Toyota"
console.log(myCar["model"]); // Prints "Corolla"

Object methods: Link to heading

  • Objects can have methods, which are functions that are defined within the object.
  • Methods can be used to perform actions on the object.

Example Link to heading

myCar = {
  make: "Toyota",
  model: "Corolla",
  year: 2020,
  carDetails: function () {
    console.log(`Car ${this.model} ${this.year}`);

myCar.carDetails(); // Prints "Car Corolla 2020"

Note: The this keyword within a method refers to the current object.

More about objects Link to heading

  • You can add new properties and methods to an object after its creation.
  • You can remove properties and methods from an object.
  • You can use objects to create complex data structures such as lists, trees, and sets.

Keep learning about objects to write more organized and flexible JavaScript code!

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