Json解析取得key

  
  
  
  

   
   
   
   var 
   
   
   
   obj 
   
   
   
   = 
   
   
   
   {
   
   
   
   "id"
   
   
   
   : 
   
   
   
   1
   
   
   
   , 
   
   
   
   "name"
   
   
   
   :
   
   
   
   "   "
   
   
   
   };
  
  
  
  
  
  
  
  

   
   
   
   for
   
   
   
   (
   
   
   
   var 
   
   
   
   key 
   
   
   
   in 
   
   
   
   obj
   
   
   
   )
  
  
  
  
  
  
  
  

   
   
   
   {
  
  
  
  
  
  
  
  
    
   
   
   
   console
   
   
   
   .
   
   
   
   log
   
   
   
   (
   
   
   
   "Key :" 
   
   
   
   + 
   
   
   
   key
   
   
   
   );
  
  
  
  
  
  
  
  
    
   
   
   
   console
   
   
   
   .
   
   
   
   log
   
   
   
   (
   
   
   
   "     :" 
   
   
   
   + 
   
   
   
   obj
   
   
   
   [
   
   
   
   key
   
   
   
   ]);
  
  
  
  
  
  
  
  

   
   
   
   }