json

{ }

值--------->名称:值

数组------->[ , ] 

function showJSON() { var user = { "username":"andy", "age":20, "info": { "tel": "123456", "cellphone": "98765"}, "address": [ {"city":"beijing","postcode":"222333"}, {"city":"newyork","postcode":"555666"} ] } alert(user.username); alert(user.age); alert(user.info.cellphone); alert(user.address[0].city); alert(user.address[0].postcode); }

修改:

function showJSON() { var user = { "username":"andy", "age":20, "info": { "tel": "123456", "cellphone": "98765"}, "address": [ {"city":"beijing","postcode":"222333"}, {"city":"newyork","postcode":"555666"} ] } alert(user.username); alert(user.age); alert(user.info.cellphone); alert(user.address[0].city); alert(user.address[0].postcode); user.username = "Tom"; alert(user.username); }

链接:http://www.json.org/json.js

将其引入然后就可以简单的使用object.toJSONString()转换成JSON数据。

function showCar() { var carr = new Car("Dodge", "Coronet R/T", 1968, "yellow"); alert(carr.toJSONString()); } function Car(make, model, year, color) { this.make = make; this.model = model; this.year = year; this.color = color; }

可以使用eval来转换JSON字符到Object

function myEval() { var str = '{ "name": "Violet", "occupation": "character" }'; var obj = eval('(' + str + ')'); alert(obj.toJSONString()); }

或者使用parseJSON()方法

function myEval() { var str = '{ "name": "Violet", "occupation": "character" }'; var obj = str.parseJSON(); alert(obj.toJSONString()); }

prototype与JSON:

function sendRequest() { var url = "/MyWebApp/JSONTest1"; var mailAjax = new Ajax.Request( url, { method: 'get', onComplete: jsonResponse } ); } function jsonResponse(originalRequest) { alert(originalRequest.responseText); var myobj = originalRequest.responseText.parseJSON(); alert(myobj.name); }

prototype.js中提供了String.evalJSON()方法， 可以不使用json.js, 修改如下:function jsonResponse(originalRequest) { alert(originalRequest.responseText); var myobj = originalRequest.responseText.evalJSON(true); alert(myobj.name); }

参考

http://www.json.org/js.html

http://www.blogjava.net/Jkallen/archive/2006/03/28/37905.html

http://www.json.org/

http://www.prototypejs.org/learn/json

http://www.json.org/java/index.html

http://www.ibm.com/developerworks/cn/web/wa-ajaxintro10/index.html

http://www.javaeye.com/topic/71343

http://www.cnblogs.com/Truly/archive/2006/12/31/608896.html