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LinkedIn Learning

JavaScript: Best Practices for Functions and Classes

via LinkedIn Learning

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Overview

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Learn how to generate more consistent and easier-to-maintain JavaScript. Discover keys and tools for building better programs and to help improve code organization and quality.

Syllabus

Introduction
  • Creating well-structured modular JavaScript
  • What you should know
  • Setting up your environment
1. Why Best Practices?
  • Understanding style guides
  • Using modern deployment tools
  • Understanding ESLint
  • Foundational practice: Always use strict mode
2. Creating Functions
  • Use function expressions instead of declarations
  • Don't use the new keyword to construct functions
  • Leave parameter values untouched
  • Use arrow syntax for anonymous functions
  • Rely on implicit return only when obvious
  • Challenge: Create functions
  • Solution: Create functions
3. Creating Classes
  • Use PascalCase for naming classes and constructors
  • Use this only in classes or constructors
  • Return this from methods
  • Don't assign this to another variable
  • Challenge: Create classes
  • Solution: Create classes
4. Creating Modules
  • Configure module settings in ESLint
  • Default export constants when possible
  • Use case to indicate a module's default export type
5. Destructuring
  • Use object destructuring
  • Use array destructuring
  • Challenge: Destructure
  • Solution: Destructure
6. JavaScript Features to Avoid
  • Avoid eval
  • Avoid == and !=
  • Avoid with
  • Avoid unary increments and decrements
Conclusion
  • Next steps

Taught by

Sasha Vodnik

Reviews

4.8 rating at LinkedIn Learning based on 72 ratings

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