gistfile1.js

var data = [
  {foo: 1},
  {foo: 2}];

// if you have objects with the same `foo` value, their current ordering with
// respect to each other *will not* be preserved.
data.sort(function(a, b) {
    return a.foo < b.foo
      ? 1
      : 0;
});

// if you have objects with the same `foo` value, their current ordering with
// respect to each other *should* be preserved.
data.sort(function(a, b) {
    if (a.foo < b.foo) {
      return -1;
    }
    else if (a.foo > b.foo) {
      return 1;
    }
    else {
      return 0;
    }
});