Writing Object-Oriented code is not only about using classes and objects — it is about writing clean, reusable, and maintainable code.
Professional developers follow certain best practices when using OOP. These practices help avoid bugs, improve readability, and make applications easier to grow.
Learning OOP best practices early helps students write industry-standard JavaScript code.
OOP Best Practices
- Keep classes small and focused
- Use meaningful class and method names
- Avoid repeating code (use inheritance wisely)
- Protect important data using encapsulation
- Prefer composition over inheritance when possible
- Write methods that do only one task
- Keep logic organized and readable
These habits make your code professional and scalable.
This class is doing too many different jobs.
When one class handles everything, it becomes hard to maintain and test.
Here, each class has a single responsibility.
This makes the code easier to understand, test, and extend.
These examples show how following OOP best practices improves code quality.
By applying these principles, students gain the ability to write clean, maintainable, and professional JavaScript applications that match real-world development standards.