1let data = [];
2for (let row=0; row<rows; row++) {
3    data.push(new Array(cols).fill('#'));
4};

1function makeArray(w, h, val) {
2    var arr = [];
3    for(let i = 0; i < h; i++) {
4        arr[i] = [];
5        for(let j = 0; j < w; j++) {
6            arr[i][j] = val;
7        }
8    }
9    return arr;
10}
11