Learn JavaScript from Scratch JavaScript for Everyone - Functions: the DRY (Don't Repeat Yourself) Principle

The video tutorial introduces the DRY (Don't Repeat Yourself) principle, emphasizing the importance of writing code once to avoid redundancy. It uses an example of age-checking logic to illustrate repetitive code. The tutorial then introduces functions as a solution to this problem, explaining their syntax and demonstrating how to implement and use them effectively. Functions allow for code reuse, making it easier to manage and update code without repetition.

What is the purpose of the return keyword in a function?

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How can using functions improve code maintainability?

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