1. Modularization: Break your code into reusable modules using ES6 modules or CommonJS.

2. Consistent Naming: Use clear, consistent naming conventions for variables and functions.

3. Folder Structure: Organize files in a logical folder structure (e.g., separate folders for components, services, utilities).

4. Documentation: Comment your code and use documentation tools like JSDoc.

5. Linting: Use a linter (like ESLint) to enforce code quality and consistency.

6. Version Control: Use Git for version control and collaboration.

7. Refactoring: Regularly refactor code to improve readability and maintainability.

8. Design Patterns: Follow design patterns like MVC or MVVM for structured code.