// A multi-dimensional array (AKA a Matrix, Agent Lionel) // The top-level array is the the rows, each row is made up of columns grid = [[" "," "] [" "," "]];
// A multi-dimensional object // Key of the top level object is the "y", // Keys of the sub-object are the "x", // Values of the sub-object are the value of the coordinate grid = { 0: { 0: " ", 1: " " },