// Practice Set · JS Arrays · guest

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Question 1 of 5 from: JS Arrays

What does this log?

const board = [
  ["X", "O"],
  ["O", "X"]
];
console.log(board[1][0], board.length);

Question 2 of 5 from: JS Array Methods

What does this log?

const list = ["a", "b", "c", "d", "e"];
const removed = list.splice(1, 2);
console.log(list, removed);

["a", "d", "e"] ["b"]
["a", "d", "e"] ["b", "c"]
["b", "c"] ["a", "d", "e"]
["a", "b", "c"] ["d", "e"]

Question 3 of 5 from: JS Array Methods

delete nums[1] removes the element at index 1 and makes the array one shorter.

True
False

Question 4 of 5 from: JS Array Sort

What does this log?

console.log([10, 9, 1, 100, 25].sort());

[1, 10, 100, 25, 9]
[100, 25, 10, 9, 1]
[1, 9, 10, 25, 100]
[10, 9, 1, 100, 25]

Question 5 of 5 from: JS Array Iterations

What does this log?

const nums = [1, 2, 3];
console.log(nums.map(x => x * 2), nums.forEach(x => x * 2));

[1, 2, 3] undefined
undefined undefined
[2, 4, 6] undefined
[2, 4, 6] [2, 4, 6]

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