var result = document.getElementById("result");
var test10Elements = [7, 6, 5, 4, 3, 2, 1, 0, 8, 9];
var test11Elements = [7, 6, 5, 4, 3, 2, 1, 0, 10, 9, 8];
var compareFn = function (x, y) {
  return x > y;
};
test10Elements.sort(compareFn);
test11Elements.sort(compareFn);

执行结果: