Spiral matrix traversal

spiralMatrix.js

let  i=0,j=0,res=[];
const traverse = (arr) => {
  while(!visited(arr)){
    goRight(arr);
    goDown(arr);
    goLeft(arr);
    goUp(arr);

  }
  return res;
}

const goRight = (arr) => {
  while(j< arr.length && arr[i][j] !== "#"){
    res.push(arr[i][j]);
    arr[i][j] = "#";
    j++;
  }
  j-=1;
}

const goDown = (arr) => {
   i+=1
   while(i < arr.length && arr[i][j] !== "#"){
     res.push(arr[i][j]);
     arr[i][j] = "#";
     i++;
   }
   i-=1;
}

const goLeft = (arr) => {
   j-=1;
   while(j>= 0 && arr[i][j] !== "#"){
     res.push(arr[i][j]);
     arr[i][j] = "#";
     j--;
   }
   j+=1
}

const goUp = (arr) => {
   i-=1;
   while(i>= 0 && arr[i][j] !== "#"){
     res.push(arr[i][j]);
     arr[i][j] = "#";
     i--;
   }
   i+=1;j+=1;
}

const visited = (arr) => {
  let res = true
  for(let i=0;i<arr.length;i++){
    let r = arr[i].every(x => x === "#");
    if(!r) return false;
  }
  return res;
}



let arr1 = [[1,2,3,4,5],
           [6,7,8,9,10],
           [11,12,13,14,15],
           [16,17,18,19,20],
           [21,22,23,24,25]]
           


let arr2 = [[1,2,3,4],
           [6,7,8,9],
           [11,12,13,14],
           [16,17,18,19]]
           
let arr3 = [[1,2,3],
           [6,7,8],
           [11,12,13]]
           
console.log(traverse(arr1));

// [
//   [ 0, 0 ], [ 0, 1 ], [ 0, 2 ], [ 0, 3 ], [ 0, 4 ],
//   [ 1, 0 ], [ 1, 1 ], [ 1, 2 ], [ 1, 3 ], [ 1, 4 ], 
//   [ 2, 0 ], [ 2, 1 ], [ 2, 2 ], [ 2, 3 ], [ 2, 4 ],
//   [ 3, 0 ], [ 3, 1 ], [ 3, 2 ], [ 3, 3 ], [ 3, 4 ], 
//   [ 4, 0 ], [ 4, 1 ], [ 4, 2 ], [ 4, 3 ], [ 4, 4 ]
// ]