Programming

The Prototype Chain Explained with a Library System

Ever borrowed a book from a library? Good. You already understand JavaScript Prototypes. Imagine you walk into your neighborhood library looking for a rare book on "The Secrets of JavaScript Sorcery." You ask the librarian, but—oops!—your library doesn’t have it. But don’t worry! Instead of sending you home empty-handed, the librarian calls up the central city library to check if they have it. If they do, you get your book. If not, the search continues up the chain… maybe to the National Library Archive. And if even they don’t have it? Sorry, no book for you. This is exactly how JavaScript’s prototype chain works!

Feb 9, 2025 - 14:01
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The Prototype Chain Explained with a Library System

Ever borrowed a book from a library? Good. You already understand JavaScript Prototypes.

Imagine you walk into your neighborhood library looking for a rare book on "The Secrets of JavaScript Sorcery." You ask the librarian, but—oops!—your library doesn’t have it.

But don’t worry! Instead of sending you home empty-handed, the librarian calls up the central city library to check if they have it. If they do, you get your book. If not, the search continues up the chain… maybe to the National Library Archive. And if even they don’t have it? Sorry, no book for you.

This is exactly how JavaScript’s prototype chain works!

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