How To Make 2D Array In JavaScript

make2DArray.js

/**
 * @param  {number} rows
 * @param  {number} cols
 */
function make2DArray(rows, cols) {
  let x = [];
  for (let i = 0; i < rows; i++) {
    x[i] = [];
    for (let j = 0; j < cols; j++) {
      x[i][j] = [];
    }
  }
  return x;
}