Today, I strengthened my understanding of JavaScript functions, including function declarations, function expressions, and modern ES6 arrow functions. I learned how to define reusable blocks of code, pass parameters, return values, and simplify logic using concise arrow syntax. I also explored the key differences between regular functions and arrow functions, especially how this behaves in each case. Additionally, I practiced using functions with array methods like map() to write cleaner and more efficient code. This class improved my confidence in writing structured and reusable JavaScript logic.