Sorting array of numbers in javascript

sortingArray.js

// return < 0, A, B (keep order)
// return > 0, A, B (switch order)

// Note that this will mutate the original array!!

// Implement this callback to sort numbers in ASCENDING order
arrayName.sort((a, b) => {
  if (a > b) return 1;
  if (a < b) return -1;
})

// Implement this callback to sort numbers in DESCENDING order
arrayName.sort((a, b) => {
  if (a > b) return -1;
  if (a < b) return 1;
})

// Shorthand
arrayName.sort((a, b) => a - b); //ascending
arrayName.sort((a, b) => b - a); //descending