Is it possible to quicksort objects based on their keys in an array, using JavaScript?

Question

To clarify a bit on the question, I have an array and within the array are a bunch of objects. Can I rearrange the objects in the array based on the key values of each object? <

Answer 1

After seeing several permutations of your code I think what you are trying to do needs to look a little something like this.

quickSort(arrayToSort, attributeToSortOn, left, right) {
    ...
}
...
function partition(arrayToSort, attributeToSortOn, left, right) {
    var pivot = student[Math.floor((right + left) / 2)][attributeToSortOn]
    ...
    while (arrayToSort[i][attributeToSortOn] < pivot) {
    ...
}
...
quickSort(studentsArray, 'studentNumber');

quickSort always needs the array to compare values at each position. You can't just pass studentsArray.studentNumber because the attribute to sort on is useless on it's own and the array has no knowledge of the types of object contained within it anyway.