javascript - Iterate over String of JSON Format -

i passing mongodb query result in string format jsp page using ajax. retrieving data don't know how iterate on data.

note : json structure of dynamic schema given below

query result in string format

[ {    "_id":"...",    "user":"john doe",    "hobbies":["1","2","3"],    "address":{       "city":"...",       "state":"...",       "country":"..."    },    "cell":97265xxxxx }, {    "_id":"...",    "user":"john doe",    "hobbies":["1","2","3"],    "cell":97265xxxxx } ... ] 

first converting json string javascript object using jquery parsejson() & trying loop on data showing me undefined.

here code

<button>click me</button><br/> <p id="p0"></p>  <p id="p1"></p> <p id="p2"></p> <p id="p3"></p> <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>  <script>     $(document).ready(function(){         $("button").on("click",function(){             $.ajax({                 url:'quizdemoservlet',                 type:'post',                 success:function(data) {                      //json string fetched                     $("#p0").html(data);                      var jso = $.parsejson(data);                     alert("jso " +jso.length);                     for(var iterate=0; iterate<jso.length; iterate++){                         $("#p1").append(iterate["user"]+"<br>");                         $("#p2").append(iterate["hobbies"]+"<br>");                         $("#p3").append(iterate["cell"]+"<br>");                     }                 },                 error:function(msg){                     alert("error");                     console.log(msg);                 }             });         });     }); </script> 

firstly, assume json correct. if so, make sure in form:

[  {    "_id":"...",    "user":"john doe",    "hobbies":["1","2","3"],    "address":{       "city":"...",       "state":"...",       "country":"..."    },    "cell":"97265xxxxx"  },  {   "_id":"...",   "user":"john doe",   "hobbies":["1","2","3"],   "cell":"97265xxxxx"  }, ......  {     .....  } ] 

make sure validate using validators such http://jsonlint.com/

your json array of objects. so, iterating on array in javascript.

lets assume variable data holds json.

var data = json.parse(your_json_string); // json `string`. need `parse` convert javascript object, can iterate on it. 

in case, can this:

  for(var obj=0;obj<data.length;obj++){       // each object here.       //obj['_id']        // obj['user']       // since schema dynamic, make sure key exists before access        if(data[obj].hobbies!= undefined){           //iterate on hobbies.       }        if(data[obj].address!=undefined){           var city = data[obj].address.city;           var state = data[obj].address.state;           var country= data[obj].address.country;      }    ....and on   }