To remove a row from a 2D array, you can use the splice() method.
Mastering 2D array manipulation will prepare you for more advanced topics like multidimensional data processing and algorithm design.
For example:
console.log(array); // output: [[1, 2, 3, 10], [4, 5, 6, 10], [7, 8, 9, 10]]
For example, if it says:
// Iterating over a 2D array for (var i = 0; i < array.length; i++) for (var j = 0; j < array[i].length; j++) console.log(array[i][j]);
Removing a column from a 2D array can be done using a similar approach. You can use a loop to iterate over each row and remove the column value. Codehs 8.1.5 Manipulating 2d Arrays
for (let r = 0; r < grid.length; r++) for (let c = 0; c < grid[r].length; c++) console.log(grid[r][c]);