Question

Is there an easy way to programmatically create a 2d array in javascript?

What I don’t want:

var array2D = [ 
  [0,0,0],
  [0,0,0],
  [0,0,0]
]

Answer 1

Well, you could write a helper function:

function zeros(dimensions) {
    var array = [];

    for (var i = 0; i < dimensions[0]; ++i) {
        array.push(dimensions.length == 1 ? 0 : zeros(dimensions.slice(1)));
    }

    return array;
}

> zeros([5, 3]);
  [[0, 0, 0], [0, 0, 0], [0, 0, 0], [0, 0, 0], [0, 0, 0]]

Bonus: handles any number of dimensions.