how to create a 2d array in javascript code example

Example 1: javascript define multidimensional array

var iMax = 20;
var jMax = 10;
var f = new Array();

for (i=0;i<iMax;i++) {
 f[i]=new Array();
 for (j=0;j<jMax;j++) {
  f[i][j]=0;
 }
}

Example 2: js initialize 2d array

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

Example 3: creating a 2d array in js

var x = new Array(10);

for (var i = 0; i < x.length; i++) {
  x[i] = new Array(3);
}

console.log(x);

Example 4: how to create 2d array in javascript

// program to create a two dimensional array

function twoDimensionArray(a, b) {
    let arr = [];

    // creating two dimensional array
    for (let i = 0; i< a; i++) {
        for(let j = 0; j< b; j++) {
            arr[i] = [];
        }
    }

    // inserting elements to array
    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 5: 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);
//output: [[0, 1, 2],
//         [1, 2, 3]]