If your JavaScript is a mess, frameworks can only do so much to help. No matter what framework, "compiles-to-JS" language, or library you use, bugs and performance concerns will always be an issue if the underlying quality of your JavaScript is poor. With this hands-on guide, you’ll learn how test and refactor your existing code to help reduce complexity, improve readability, and gain confidence in the codebase.

Author Evan Burchard shows you how to identify areas of bad code, and then takes you through several refactoring methods for improving them. Techniques range from renaming variables to applying principles of functional and object-oriented programming. If you’re motivated to write better JavaScript code either on the frontend or backend, this book is a must.

Use refactoring to restructure existing code, without changing its behavior
Learn the relationship between refactoring and quality
Explore the many versions of JavaScript in use today
Create automated tests to confirm that your code works, and find bugs that slip through
Learn how to refactor simple JavaScript structures, functions, and objects
Refactor your codebase by applying object-oriented and functional programming principles
Examine methods for refactoring asynchronous JavaScript

About the Author

Evan Burchard is a Web Development Consultant and the author of The Web Game Developer’s Cookbook. Offline, he has designed an award-winning kinetic game involving stacking real ice cubes, and periodically picks up his project to walk across the U.S.

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