Arrays - Codehs 8.1.5 Manipulating 2d

arrayName.splice(rowIndex, 1); For example:

In CodeHS, you can declare and initialize a 2D array using the following syntax: Codehs 8.1.5 Manipulating 2d Arrays

var myArray = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]; myArray[1][2] = 10; // myArray = [[1, 2, 3], [4, 5, 10], [7, 8, 9]]; Adding a new row to a 2D array can be done using the push() method. arrayName

var arrayName = [[value1, value2, ...], [value3, value4, ...], ...]; For example: For example: In CodeHS

var myArray = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]; var value = myArray[1][2]; // value = 6 Modifying an element in a 2D array is similar to accessing an element. You simply assign a new value to the element using its row and column index.