What will be the output of the following code: const arr = [1, 2, 3]; arr.push(6); console.log(arr); arr.pop(); console.log(arr); arr.shift(); console.log(arr); arr.unshift(8); console.log(arr);?

The code provided performs a series of array manipulations using methods that modify the original array. Initially, the array arr is declared and initialized with the elements [1, 2, 3].

When the push(6) method is called, the value 6 is added to the end of the array, resulting in [1, 2, 3, 6]. This is confirmed by the first console.log(arr), which outputs the updated state of the array.

Next, the pop() method removes the last element from the array. Since the last element is 6, after this operation, the array reverts to [1, 2, 3]. This is echoed in the next console.log(arr) statement.

Subsequently, shift() is called, which removes the first element of the array. Now, 1 is removed, leading to the array becoming [2, 3], which is displayed with the next console.log(arr).

Finally, the unshift(8) method adds 8 to the front of the array, resulting in the array transforming to [8, 2, 3]. This last change