--description--

Now that you know about the most common ways to iterate over values and arrays, there are a few more ways to iterate over arrays. Arrays have a built-in method called map(), which is used to create a new array by applying a function to each element of the original array. The map() method does not change the original array. The syntax of the map() method is as follows:

const array = [1, 2, 3, 4, 5];

const newArray = array.map((arrayValue) => {
  return arrayValue * 2;
});

console.log(newArray); // Output: [2, 4, 6, 8, 10]

The map() method creates a new array by applying the function (arrayValue) => { return arrayValue * 2; } to each element of the original array. This is particularly useful when you want to transform the elements of an array without changing the original array.

--questions--

--text--

What will be the output of the following JavaScript code snippet?

const numbers = [1, 2, 3, 4, 5];
const newNumbers = numbers.map((number) => {
  return number * 3;
});

console.log(newNumbers);

--answers--

[1, 2, 3, 4, 5]

[3, 6, 9, 12, 15]

[1, 3, 5, 7, 9]

[3, 6, 9, 12, 15, 18]

--video-solution--

2