const arr = [8, 2, 5, 3, 0]

arr.sort((a, b) => {
  
  // -1 sorts up
  if (a > b) return -1
  
  // 1 sorts down
  else if (a < b) return 1
  
  // 0 keeps position
  return 0
})

console.log(arr) // [8, 5, 3, 2, 0]