What is the array map function in JavaScript?

Can you explain what the array map function does in JavaScript?

Sure! The array map function creates a new array populated with the results of calling a provided function on every element in the calling array.

Can you give me an example of how to use it?

Of course! Here's a simple example:

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

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

You can use it to extract properties from objects as well. For example:

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