leonardomso/33-js-concepts

📜 33 JavaScript concepts every developer should know.

<h1 align="center"> <br> <a href="https://github.com/leonardomso/33-js-concepts"><img src="github-image.png" alt="33 Concepts Every JS Developer Should Know"></a> <br> <br> <strong>33 Concepts Every JavaScript Developer Should Know</strong> <br><br> </h1> <p align="center"> <a href="https://33jsconcepts.com">Read the Full Guide</a> • <a href="#concepts">Concepts</a> • <a href="TRANSLATIONS.md">Translations</a> • <a href="CONTRIBUTING.md">Contributing</a> </p> <div align="center"> <strong>Recognized by GitHub as one of the <a href="https://github.blog/news-insights/octoverse/new-open-source-projects/#top-projects-of-2018">top open source projects of 2018!</a></strong> </div> --- ## About This repository helps developers master core JavaScript concepts. Each concept includes clear explanations, practical code examples, and curated resources. **[Start learning at 33jsconcepts.com →](https://33jsconcepts.com)** --- ## Concepts ### Fundamentals - **[Primitive Types](https://33jsconcepts.com/concepts/primitive-types)** Learn JavaScript's 7 primitive types: string, number, bigint, boolean, undefined, null, and symbol. Understand immutability, typeof quirks, and autoboxing. - **[Primitives vs Objects](https://33jsconcepts.com/concepts/primitives-objects)** Learn how JavaScript primitives and objects differ in behavior. Understand immutability, call-by-sharing semantics, why mutation works but reassignment doesn't, and how V8 actually stores values. - **[Type Coercion](https://33jsconcepts.com/concepts/type-coercion)** Learn JavaScript type coercion and implicit conversion. Understand how values convert to strings, numbers, and booleans, the 8 falsy values, and how to avoid common coercion bugs. - **[Equality Operators](https://33jsconcepts.com/concepts/equality-operators)** Lea