Question

How to declare and initialize a matrix with zeros in JavaScript

Answer 1

let rows = 4;
let cols = 5;

let matrix = Array(rows).fill(0).map(()=>new Array(cols).fill(0));

console.log(matrix);



/*
run:

[
  [ 0, 0, 0, 0, 0 ],
  [ 0, 0, 0, 0, 0 ],
  [ 0, 0, 0, 0, 0 ],
  [ 0, 0, 0, 0, 0 ]
]

*/

 

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