Json Traverse Problem, not able to traverse values

Question

I m getting the below return from ajax call but not able to traverse it please please help.

{
    "1": {
        "tel1": null, 
        "status": "1", 
        "fax": "",     
        "tel2": null,  
        "name": "sh_sup1", 
        "country": "Anguilla", 
        "creation_time": "2010-06-02 14:09:40",
        "created_by": "0",
        "Id": "85",
        "fk_location_id": "3893",
        "address": "Noida",
        "email": "[email protected]",
        "website_url": "http://www.noida.in",
        "srk_main_id": "0"
    },
    "0": {
        "tel1": "Ahemdabad",
        "status": "1",
        "fax": "",
        "tel2": "Gujrat",
        "name": "Bharat Petro",
        "country": "India",
        "creation_time": "2010-05-31 15:36:53",
        "created_by": "0",
        "Id": "82",
        "fk_location_id": "3874",
        "address": "THIS is test address",
        "email": "[email protected]",
        "website_url": "http://www.bp.com",
        "srk_main_id": "0"
    },
    "count": 2
}

Answer 1

You can do it very easily:

for(i = 0; i < msg.count; i++) {
   alert(msg[i]['name']);
} 

But the structure of your JSON object is not that good for several reasons:

• It does not reflect the structure of the actual data
  With this I mean, that you actually have an array of objects. But in your JSON object the elements of the array are represented as properties of an object.

• You have invalid JavaScript object property names.
  Properties for objects in JavaScript are not allowed to start with numbers. But with msg = { "1": {...}} you have a number as property.
  Fortunately it is not that bad because you can access this property with "array like" access msg["1"] (instead of the "normal way", msg.1). But I would consider this as bad practice and avoid this as much as possible.

---

Hence, as Matthew already proposes, it would be better to remove the count entry from the array on the server side, before you sent it to the client. I.e. you should get a JSON array:

[{
     "tel1": "Ahemdabad",
     "status": "1",
     // etc.
 },
 {    
     "tel1": null,
     "status": "1",
     // etc.
 }]

You don't need count as you can get the length of the array with msg.length and you can traverse the array with:

for(var i in msg) {
    alert(msg[i].name);
}