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About You Don't Know JS

📚 You Don’t Know JS – (2025–2026 Edition)

You Don’t Know JS (2025–2026 Edition) is a complete academic resource for students who want to study JavaScript in a simple and exam-oriented way. This edition provides a syllabus book, MCQs, and quizzes — everything you need for structured learning and effective revision.

The content is designed in a clear, unit-wise format so that learners can easily understand the topics, prepare step by step, and test their knowledge with practice questions. Whether you are in BS/CS, BS/IT, or software engineering, this resource is built to match your academic needs.

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🎯 Learning Outcomes

✅ Study JavaScript with a complete syllabus book.
✅ Revise each unit with MCQs.
✅ Test your preparation with quizzes.
✅ Learn in a structured and exam-focused style.

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📂 Units & Topics

🔹 Unit 1: Up and Going

Learning JavaScript Basics
Syntax and Grammar
Types and Values

🔹 Unit 2: Scope and Closures

Variable Scope
Lexical Scope
Closures and Their Uses

🔹 Unit 3: This and Object Prototypes

The "this" Keyword
Object Prototypes
Prototype Chains and Inheritance

🔹 Unit 4: Types and Grammar

JavaScript Coercion
Type Coercion
Equality Comparisons

🔹 Unit 5: Async and Performance

Callbacks
Promises
Async-Await
Event Loop and Concurrency

🔹 Unit 6: ES6 and Beyond

New Syntax and Features in ES6
Modules
Arrow Functions
Classes

🔹 Unit 7: Into Programming

Code
Try It Yourself
Operators
Values and Types

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🌟 Why Choose You Don’t Know JS?

📖 Includes a syllabus book for complete study.
📝 Provides MCQs and quizzes for revision.
🎓 Ideal for BS/CS, BS/IT, and software engineering students.
📂 Covers the full JavaScript syllabus in unit-wise format.

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This app is inspired by the authors:
Marijn Haverbeke, Douglas Crockford, David Herman, Eric Elliott, Michael Fogus, Brenden Eich, Kyle Simpson

📥 Download Now!

Get You Don’t Know JS – (2025–2026 Edition) and make your JavaScript learning simple, clear, and exam-ready. With a syllabus book, MCQs, and quizzes, this edition is the perfect academic companion for students preparing for exams and class tests.