What will be the output of console.log(arr.map(x => x * 2)) for the array [1, 4, 9, 16]?

What will be the output of console.log(arr.map(x => x * 2)) for the array [1, 4, 9, 16]?

• A. [2, 8, 18, 32]
• B. [2, 4, 9, 16]
• C. [1, 4, 9, 16]
• D. [1, 8, 18, 32]

Answer: (A)

The output of `console.log(arr.map(x => x * 2))` for the array `[1, 4, 9, 16]` will be a new array where each element of the original array has been multiplied by 2. The method `map` creates a new array based on the results of calling a provided function on every element in the calling array. In this case, the function is `x => x * 2`, which takes each element `x` from the array and multiplies it by 2. Here's the breakdown of the calculations: - For the first element, `1 * 2` results in `2`. - For the second element, `4 * 2` results in `8`. - For the third element, `9 * 2` results in `18`. - For the fourth element, `16 * 2` results in `32`. Therefore, when the original array `[1, 4, 9, 16]` is processed through the `map` function, the resulting array becomes `[2, 8, 18, 32]`. This demonstrates how the `map` function can be utilized to transform the elements of an array based on

The output of console.log(arr.map(x => x * 2)) for the array [1, 4, 9, 16] will be a new array where each element of the original array has been multiplied by 2. The method map creates a new array based on the results of calling a provided function on every element in the calling array.

In this case, the function is x => x * 2, which takes each element x from the array and multiplies it by 2. Here's the breakdown of the calculations:

• For the first element, 1 * 2 results in 2.

• For the second element, 4 * 2 results in 8.

• For the third element, 9 * 2 results in 18.

• For the fourth element, 16 * 2 results in 32.

Therefore, when the original array [1, 4, 9, 16] is processed through the map function, the resulting array becomes [2, 8, 18, 32].

This demonstrates how the map function can be utilized to transform the elements of an array based on