数组对象排序

一、升序

   var users = [
        {
            name: 'aaa',
            age: 21
        },
        {
            name: 'baa',
            age: 18
        },
        {
            name: 'abc',
            age: 24
        }
    ]
var sortByAge = users.sort(function(v1, v2){
        return  v1.age - v2.age
    })

二、降序

   var users = [
        {
            name: 'aaa',
            age: 21
        },
        {
            name: 'baa',
            age: 18
        },
        {
            name: 'abc',
            age: 24
        }
    ]
var sortByAge = users.sort(function(v1, v2){
        return  v2.age - v1.age
    })