Javascript parses the json instance in detail

This article illustrates how javascript can parse json. Share with you for your reference. Specific methods are as follows:

Download the json libraries
http://www.json.org/json-zh.html your own javascript
Or just go down there
https://github.com/douglascrockford/JSON-js
 
PHP generates json format

Use page

<script src="scripts/json.js"></script>  

alert(data.toJSONString());

 
If false is returned, there is no data
 
Js code:

functionshowJSON() {   

   varuser =   

     {   

       "username":"tom",   

       "age":20,   

        "info": {"tel":"123456","cellphone":"98765"},   

      "address":   

       [   

                {"city":"shanghai","postcode":"201203"},   

                 {"city":"suzhou","postcode":"200000"}   

             ]   

     }   

       

     alert(user.username);   

     alert(user.age);   

     alert(user.info.cellphone);   

     alert(user.address[0].city);   

     alert(user.address[0].postcode);   

}

Modify the

user.username ="jerry";

You can use eval to convert JSON characters to Object

functionmyEval() {   

    varstr = '{"name":"Violet","occupation":"character"}';   

    varbj = eval('(' + str + ')');   

     alert(obj.toJSONString());   

}

 
Or use the parseJSON() method

functionmyEval() {   

    varstr = '{"name":"Violet","occupation":"character"}';   

    varbj = str.parseJSON();   

     alert(obj.toJSONString());   

}