What are some examples of the map method in JavaScript?

Can you explain the map method in JavaScript with some examples?

Sure! The map method creates a new array by applying a function to each element of the original array. For example, if you have an array of numbers and you want to double each number, you can use map like this:

const numbers = [1, 2, 3, 4];
const doubled = numbers.map(num => num * 2);
console.log(doubled); // [2, 4, 6, 8]

That's helpful! Can you give me another example?

Of course! Here's another example where we convert an array of strings to uppercase:

const fruits = ['apple', 'banana', 'cherry'];
const uppercasedFruits = fruits.map(fruit => fruit.toUpperCase());
console.log(uppercasedFruits); // ['APPLE', 'BANANA', 'CHERRY']

What if I want to use map with an object?

Great question! You can use map with an array of objects. For instance, if you have an array of user objects and you want to extract their names:

const users = [{ name: 'Alice' }, { name: 'Bob' }, { name: 'Charlie' }];
const names = users.map(user => user.name);
console.log(names); // ['Alice', 'Bob', 'Charlie']