new 2d array javascript code example

Example 1: how to make a 2d array in js

let x = [
  [1, 2, 3],
  [4, 5, 6],
  [7, 8, 9]
];
console.log(items[0][0]); // 1
console.log(items[0][1]); // 2
console.log(items[1][0]); // 4
console.log(items[1][1]); // 5
console.log(items);

Example 2: js initialize 2d array

let data = [];
for (let row=0; row<rows; row++) {
    data.push(new Array(cols).fill('#'));
};