What are some examples of using the map function in JavaScript?

Can you explain how the map function works in JavaScript?

Sure! The map function creates a new array by applying a provided function to each element in the original array.

Can you give me an example of using map with an array of numbers?

Of course! For instance, if you have an array [1, 2, 3] and you use map to double each number, it would look like this: const doubled = [1, 2, 3].map(num => num * 2); // Result: [2, 4, 6].

What if I want to use map with an array of objects?

Great question! If you have an array of objects, like [{name: 'Alice'}, {name: 'Bob'}], you can use map to extract names: const names = arr.map(obj => obj.name); // Result: ['Alice', 'Bob'].

Are there any performance considerations when using map?

Yes, while map is convenient, it creates a new array, which can be less memory efficient for large datasets. Consider using forEach if you don't need a new array.