var game_board = [
[1, 2, 3],
[4, 5, 6],
[7, 8, 9],
];
(function iterate() {
game_board.forEach((row, i) => {
row.forEach((value, j) => {
// accessing indexes i and j
console.log(i, j);
});
});
})()I have a two-dimensional array and I need to access the indexes of each element in it.
Well, it turns out that you actually have access to:
var game_board = [
[1, 2, 3],
[4, 5, 6],
[7, 8, 9],
];
game_board.forEach((element, i) => {
element.forEach((value, j) => {
console.log('i : '+i+', j : '+j);
});
});Note: Remember, function arguments of parent functions are accessible by child functions no matter how nested they are. This is why the foreach callback function behaves in a similar manner.
Just as an example:
let board_game = [
[1, 2, 3],
[4, 5, 6],
[7, 8, 9],
];
function displayBoard() {
board_game.forEach((row, rowIndex) => {
row.forEach((value, colIndex) => {
// access rowIndex here
console.log(colIndex, rowIndex);
});
});
}
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