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Clean Code in JavaScript

You're reading from   Clean Code in JavaScript Develop reliable, maintainable, and robust JavaScript

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Product type Paperback
Published in Jan 2020
Publisher Packt
ISBN-13 9781789957648
Length 548 pages
Edition 1st Edition
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Author (1):
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James Padolsey James Padolsey
Author Profile Icon James Padolsey
James Padolsey
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Table of Contents (26) Chapters Close

Preface 1. Section 1: What is Clean Code Anyway?
2. Setting the Scene FREE CHAPTER 3. The Tenets of Clean Code 4. The Enemies of Clean Code 5. SOLID and Other Principles 6. Naming Things Is Hard 7. Section 2: JavaScript and Its Bits
8. Primitive and Built-In Types 9. Dynamic Typing 10. Operators 11. Parts of Syntax and Scope 12. Control Flow 13. Section 3: Crafting Abstractions
14. Design Patterns 15. Real-World Challenges 16. Section 4: Testing and Tooling
17. The Landscape of Testing 18. Writing Clean Tests 19. Tools for Cleaner Code 20. Section 5: Collaboration and Making Changes
21. Documenting Your Code 22. Other Peoples' Code 23. Communication and Advocacy 24. Case Study 25. Other Books You May Enjoy

Conversion, coercion, and casting

So far, we have learned how to tell the difference between various types and characteristics within JavaScript using detection. As we have seen, detection is useful when needing to provide alternative values or warnings in the case of unexpected or incompatible values. There is an additional mechanism for dealing with such values, however: we can convert them from the values we don't desire into the values we do desire.

In order to convert a value, we use a mechanism known as casting. Casting is the intentional and explicit derivation of one type from another type. In contrast to casting, there is also coercion. Coercion is the implicit and internal process of conversion employed by JavaScript when we use operators or language constructs that require specific types. An example of this would be when passing String values to a multiplication...

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