js parses json to read entity objects in List

var obj = eval("("+data+")");  
for(var key in obj){ //The first layer loops to get each list  
     var List = obj[key];  
     for(var student in List){ //The second loop takes the objects in the list  
          alert(List[student ].id);  
          alert(List[student ].name);  
     }  
 }