根据对象的属性排序数组

    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"));