根据对象的年龄排序。

var boy = [{        name: "jiang",        age: 22    }, {        name: "AAAAAAAAAAAAAA",        age: 21    }, {        name: "CCCCCCCCc",        age: 25    }];    function compare(propertyName) {        return function(object1, object2) {            var value1 = object1[propertyName];            var value2 = object2[propertyName];            if (value2 < value1) {                return 1;            } else if (value2 > value1) {                return -1;            } else {                return 0;            }        }    }     boy.sort(compare("age"));