1、自定義一個比較器，其引數為待排序的屬性。

2、將帶引數的比較器傳入sort()。

var data = [    {name: "Bruce", age: 23, id: 16, score: 80},    {name: "Alice", age: 24, id: 12, score: 90},    {name: "David", age: 21, id: 11, score: 70},    {name: "Cindy", age: 22, id: 10, score: 100},];

data.sort(compareUp("age"));data.sort(compareDown("age"));

function compareUp(propertyName) { // 升序排序        if ((typeof data[0][propertyName]) != "number") { // 屬性值為非數字              return function(object1, object2) {                  var value1 = object1[propertyName];                  var value2 = object2[propertyName];                 return value1.localeCompare(value2);

function compareDown(propertyName) { // 降序排序       if ((typeof data[0][propertyName]) != "number") { // 屬性值為非數字