JSON是一种基于文本的数据交换方式

JSONP是的一种“使用模式”，可用于解决主流浏览器的跨域数据访问的问题。

 

JSON实例：

// 描述一个人var person = {    "Name": "Bob",    "Age": 32,    "Company": "IBM",    "Engineer": true}// 获取这个人的信息var personAge = person.Age;// 描述几个人var members = [    {        "Name": "Bob",        "Age": 32,        "Company": "IBM",        "Engineer": true    },    {        "Name": "John",        "Age": 20,        "Company": "Oracle",        "Engineer": false    },    {        "Name": "Henry",        "Age": 45,        "Company": "Microsoft",        "Engineer": false    }]// 读取其中John的公司名称var johnsCompany = members[1].Company;// 描述一次会议var conference = {    "Conference": "Future Marketing",    "Date": "2012-6-1",    "Address": "Beijing",    "Members":     [        {            "Name": "Bob",            "Age": 32,            "Company": "IBM",            "Engineer": true        },        {            "Name": "John",            "Age": 20,            "Company": "Oracle",            "Engineer": false        },        {            "Name": "Henry",            "Age": 45,            "Company": "Microsoft",            "Engineer": false        }    ]}// 读取参会者Henry是否工程师var henryIsAnEngineer = conference.Members[2].Engineer;