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hi there! 👋

• There's a term in programming called modular programming. Basically, this means you should break down your programs into individual modules. And these modules very base are functions.

• Modular programming have a lot of advantages: simplicity, reusability and scalability. With this in mind, the answer to your question: you should define functions everywhere possible.

• Don't forget: you can use functions in eventListeners and conditional statements as well, making a function callback on global scope is not the only way to execute a function. 🙅‍♂️

Hope this helped 🙏

Good luck and happy coding! 💪

Hello friend, functions are valuable for encapsulating code related to specific tasks, keeping it separate from the global scope and allowing for reuse throughout the program. Additionally, functions are useful when you need to process input data and produce an output, I hope this will help you, and answered: when to create functions