javascript - How to iterate json data in jquery + ajax -

but respnce in json, i.e alert(html)

<script> function addcartaction(id){ var datastring='id='+id;      $.ajax({     type: "post",     url:"<?php echo yii::app()->request->baseurl; ?>/testurl",     data: datastring,     success: function(html)     {       alert(html);          $("#cart-item").html(html);     }     });  }  </script>    {         "1": {             "itemname": "product1",             "id": "1",             "item_image": "http://testurl.com/gallerythumb/test.jpg",             "price": "4.99",             "quantity": 1         },         "2": {             "itemname": "product2",             "id": "2",             "item_image": "http://testurl.com/gallerythumb/test1.jpg",             "price": "7.99",             "quantity": 12         }     } 

i have tried alot of different syntax can't seem figure out. can 1 point me in right direction?, can solve one.

once have json string, use parsejson() function, returns object. can access it's properties shown in docs.

also might refer to:

1. converting json object javascript array
2. convert json string javascript array