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๐Ÿ”Ÿ Essential JavaScript Habits for Developers

Essential JavaScript Habits for Developers

JavaScript

1. Write Clean and Readable Code

  • Use consistent naming conventions and indentation.
  • Follow a popular style guide like Airbnb's.
  • Keep functions and files short and focused.

2. Understand the JavaScript Execution Model

  • Learn about the event loop, call stack, and microtasks.
  • Know how asynchronous code is executed.
  • Master setTimeout, Promises, and async/await.

3. Use const and let Instead of var

  • const for values that donโ€™t change.
  • let for variables that may change.
  • Avoid var to prevent hoisting and scope issues.

4. Keep Code DRY (Donโ€™t Repeat Yourself)

  • Abstract repeated logic into functions or modules.
  • Use array methods like .map(), .filter(), .reduce().
  • Modularize your code for reusability.

5. Handle Errors Gracefully

  • Use try...catch with async/await.
  • Validate user input and external data.
  • Prevent application crashes with fallback logic.

6. Master the DOM and Event Handling

  • Understand how to manipulate the DOM efficiently.
  • Use addEventListener() properly.
  • Avoid memory leaks with event clean-up.

7. Use Modern ES6+ Features

  • Arrow functions, destructuring, template literals, etc.
  • Keep up with new features in newer ECMAScript versions.
  • Write concise and expressive code.

8. Write Unit Tests

  • Use frameworks like Jest, Mocha, or Vitest.
  • Test core logic and edge cases.
  • Make your code more robust and refactor-friendly.

9. Organize Your Code for Scalability

  • Use modules and folder structures.
  • Separate concerns: logic, UI, API calls.
  • Follow patterns like MVC or component-based design.

10. Practice Regularly and Build Projects

  • Apply what you learn by building real apps.
  • Tackle coding challenges (e.g., Codewars, LeetCode).
  • Contribute to open source or join dev communities.

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