The Modern JavaScript Bootcamp (2019) - Splitting up Our Application Code

The video tutorial discusses the process of refactoring, which involves restructuring code without altering its external behavior. It emphasizes the importance of organizing code into separate JavaScript files and using functions to enhance code readability and maintainability. The tutorial also covers the concept of the global namespace in JavaScript and demonstrates how to refactor code by creating reusable functions. Testing the refactored code and ensuring it functions as expected is highlighted. The video concludes with a summary of the refactoring process and introduces the next steps for further learning.

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