What are some real-world examples of using map and forEach in JavaScript?

Can you give me some real-world examples of using map and forEach in JavaScript?

Sure! The map method is often used to transform data in an array. For example, if you have an array of numbers and you want to double each number, you can use map like this: const doubled = numbers.map(num => num * 2);

What about forEach? How is it different from map?

forEach is used to execute a function on each element of an array without returning a new array. For instance, if you want to log each element, you can do: numbers.forEach(num => console.log(num));

Can you give me a practical example where I would use both?

Absolutely! Imagine you have an array of user objects and you want to create a new array of usernames while logging each user. You could use map to create the usernames and forEach to log them: const usernames = users.map(user => user.name); users.forEach(user => console.log(user.name));