如何排序javascript對象？

Question

這裏是我的對象：

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}; 

我怎麼能按年齡排序，用戶？

Answer 1

首先，考慮存儲用戶在一個陣列，而不是一個對象

var users = [user1, user2, user3]; 

，那麼你需要一種功能

//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; 
} 

那麼你可以使用那種你需要的地方

users.sort(sortByAge);