In this, the final chapter, we have explored a real-world problem through the lens of the principles and learnings that we have gathered throughout the book. We posed a problem that users were encountering and then designed and implemented a user experience that solved their problem in a clean way. This included both server-side and client-side pieces, enabling us to see, from start to finish, what a self-contained JavaScript project may look like. Although we haven't been able to cover every single detail, I hope that this chapter has been helpful in cementing the core ideas behind clean code and that you now feel better prepared to write clean JavaScript code to tackle all types of problem domains. One core tenet I hope you can take away with you is simply this: focus on the user.
Clean Code in JavaScript
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Clean Code in JavaScript
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Overview of this book
Building robust apps starts with creating clean code. In this book, you’ll explore techniques for doing this by learning everything from the basics of JavaScript through to the practices of clean code. You’ll write functional, intuitive, and maintainable code while also understanding how your code affects the end user and the wider community.
The book starts with popular clean-coding principles such as SOLID, and the Law of Demeter (LoD), along with highlighting the enemies of writing clean code such as cargo culting and over-management. You’ll then delve into JavaScript, understanding the more complex aspects of the language. Next, you’ll create meaningful abstractions using design patterns, such as the Class Pattern and the Revealing Module Pattern. You’ll explore real-world challenges such as DOM reconciliation, state management, dependency management, and security, both within browser and server environments. Later, you’ll cover tooling and testing methodologies and the importance of documenting code. Finally, the book will focus on advocacy and good communication for improving code cleanliness within teams or workplaces, along with covering a case study for clean coding.
By the end of this book, you’ll be well-versed with JavaScript and have learned how to create clean abstractions, test them, and communicate about them via documentation.
Table of Contents (26 chapters)
Preface
Section 1: What is Clean Code Anyway?
The Tenets of Clean Code
The Enemies of Clean Code
SOLID and Other Principles
Naming Things Is Hard
Section 2: JavaScript and Its Bits
Primitive and Built-In Types
Dynamic Typing
Operators
Parts of Syntax and Scope
Control Flow
Section 3: Crafting Abstractions
Design Patterns
Real-World Challenges
Section 4: Testing and Tooling
The Landscape of Testing
Writing Clean Tests
Tools for Cleaner Code
Section 5: Collaboration and Making Changes
Documenting Your Code
Other Peoples' Code
Communication and Advocacy
Case Study
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