javascriptはjsonの添削を調べます.

<script type="text/javascript">  
        var json = {  
            "age":24,  
            "name":"cst"  
        };  
        //  Json  age ,  Json   age    
        json["age"] = 30;  
        alert(json.age); //30  
   
        //  Json  sex ,  Json    sex    
        json["sex"] = "M";  
        alert(json.sex); //M  
   
        <!--   Json     -->  
        for(var key in json){  
            try{  
                var value = eval("json['" +  key +"']");  
                alert(key+"_"+value);  
            }catch(e){}  
        }  
   
        //  Json    age    
        delete json["age"];  
        alert(json.age); //undefined  
   
    </script>