How to sort a javascript array of numbers

Usually works for me:

a.sort(function(a,b){ 
  return a - b;
});

So if you write the sorting function, it will work.

[1, 23, 100, 3].sort(function(a, b){
    if (a > b)
        return 1;
    if (a < b)
        return -1;
    return 0
});