how to access and use 2d arrays javascipt code example
Example 1: how to create 2d array in javascript
function twoDimensionArray(a, b) {
let arr = [];
for (let i = 0; i< a; i++) {
for(let j = 0; j< b; j++) {
arr[i] = [];
}
}
for (let i = 0; i< a; i++) {
for(let j = 0; j< b; j++) {
arr[i][j] = j;
}
}
return arr;
}
const x = 2;
const y = 3;
const result = twoDimensionArray(x, y);
console.log(result);
Example 2: javascript create 2d array
function create2DArray(rows, columns, value = (x, y) => 0) {
var array = new Array(rows);
for (var i = 0; i < rows; i++) {
array[i] = new Array(columns);
for (var j = 0; j < columns; j++) {
array[i][j] = value(i, j);
}
}
return array;
}
var array = create2DArray(2, 3, (row, column) => row + column);
console.log(array);