Codehs 8.1.5 Manipulating 2d Arrays -

var myArray = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]; myArray.push([10, 11, 12]); // myArray = [[1, 2, 3], [4, 5, 6], [7, 8, 9], [10, 11, 12]]; Removing a row from a 2D array can be done using the splice() method.

for (var i = 0; i < arrayName.length; i++) { arrayName[i].splice(columnIndex, 1); } For example: Codehs 8.1.5 Manipulating 2d Arrays

Now that we've covered the basics, let's move on to the fun part – manipulating 2D arrays! In exercise 8.1.5, you'll learn how to perform various operations on 2D arrays. To access an element in a 2D array, you need to specify its row and column index. The syntax is as follows: var myArray = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]; myArray