语法：
JSON.stringify(value [, replacer] [, space])
var student = new Object(); student.name = "Lanny"; student.age = "25"; student.location = "China"; var json = JSON.stringify(student); alert(student);
转之：http://www.jb51.net/article/29893.htm
原文：http://www.cnblogs.com/lemonphp/p/5643753.html