在之前的文章中我们讲到了早期的集中数据格式，XML，SOAP，HTML。现在，我们来看看JSON和JSONP。

　　JSON

　　JSON(JavaScript Object Notation)是Douglas Crockford提出的。他是一个轻量级的数据交换格式，基于JavaScript对象字面量。

　　我们可以将之前的XML图书格式的文件内容转换成下面的JSON格式：

[
   {
       title: "The Principles of Beautiful Web Design, 2nd Edition",
       url: "http://www.sitepoint.com/books/design2/",
       author: "Jason Beaird",
       publisher: "SitePoint",
       price: {
           currency: "USD",
           amount: 39.95
        }
    },
    {
        title: "jQuery: Novice to Ninja",
        url: "http://www.sitepoint.com/books/jquery1/",
        author: "JEarle Castledine & Craig Sharkie",
        publisher: "SitePoint",
        price: {
            currency: "USD",
            amount: 29.95
        }
    },
    {
        title: "Build Your Own Database Driven Website",
        url: "http://www.sitepoint.com/books/phpmysql4/",
        author: "Kevin Yank",
        publisher: "SitePoint",
        price: {
            currency: "USD",
            amount: 39.95
        }
    }
]        

        

        
        
      
        
it知识库：Ajax和WEB服务数据格式：JSON与JSONP，转载需保留来源！
        
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