Javascript 2d array indexOf

Question

I have a 2d array like this:

var arr = [[2,3],[5,8],[1,1],[0,9],[5,7]];

Each index stores an inner array containing the coordinates of some

Answer 1

Here's what I implemented

getIndexOfArray(array: any[], findArray: any[]): number{
  let index = -1;
  array.some((item, i)=>{
    if(JSON.stringify(item) === JSON.stringify(findArray)) {
      index = i;
      return true;
    }
  });
  return index;
}

here array is the array in which we need the index and findArray is the array whose index will be returned.
Note: This function will return only the first occurrence of findArray array insight array array.