array2D[1][2] // returns 6

To work with 2D arrays in CodeHS, you need to declare and initialize them first. Here’s an example of how to declare and initialize a 2D array:

for (var i = 0; i < array2D.length; i++) { for (var j = 0; j < array2D[i].length; j++) { console.log(array2D[i][j]); } } This code iterates through each element in the 2D array and logs its value to the console.