如何排序javascript对象？

Question

这里是我的对象：

var user1 = new Object(); 
user1.username = "user1"; user1.sex="m"; user1.age=20; 

var user2 = new Object(); 
user2.username = "user1"; user2.sex="f";user2.age=30; 

var user3 = new Object(); 
user3.username = "user3"; user3.sex="f";user3.age=22; 

var users = {"john":user1, "jerry": user2, "marry":user3}; 

我怎么能按年龄排序，用户？

Answer 1

首先，考虑存储用户在一个阵列，而不是一个对象

var users = [user1, user2, user3]; 

，那么你需要一种功能

//a and be will be passed in, you need to tell it which one is greater 
function sortByAge(a,b) { 

    if (a.age > b.age) return 1; 
    if (a.age < b.age) return -1; 
    /* else */ return 0; 

    //how I had it previously that people commented on 
    //return a.age > b.age; 
} 

那么你可以使用那种你需要的地方

users.sort(sortByAge);