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Js Classes Oop — Free Javascript Tutorial

Learn Js Classes Oop in Javascript with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.

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TL;DR: Learn Js 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 Jul 14, 2026

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Js 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.

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