Classes & OOP — Free JavaScript Tutorial
Learn Classes & OOP in JavaScript with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.
TL;DR: Learn Classes & OOP in JavaScript with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.
Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated
Classes & OOP in JavaScript
ES6 classes provide a clean syntax for creating objects with shared methods. Under the hood, they use JavaScript's prototype system.
`class` keyword, `constructor()` for initialization. `this` refers to the instance.
Inheritance: `class Child extends Parent`. Call parent constructor with `super()`.
Private fields (ES2022): `#field` — accessible only inside the class.
Static methods: `static method()` — called on the class itself, not on instances.
Learn Classes & OOP step by step with Syllab's free interactive JavaScript tutorial — runnable code examples, practice exercises and instant AI feedback, all free with no signup. Explore the full JavaScript course →