How to count json object in javascript

Question

How can i count the object of my request?

I am using ajax and requesting json data to this url pbxApi+"/conference/participants/"+circle+"/"+data.conference+"/"+data.uniqueid+'?jsonp=response'; and i want to count the object of the response .

This is my code

 var uri = pbxApi+"/conference/participants/"+circle+"/"+data.conference+"/"+data.uniqueid+'?jsonp=response';
        getJsonData(uri, function(res){
            console.log(res.length);
});

This is my functiion:

  var getJsonData = function(uri,callback){
    $.ajax({
      type: "GET",
      dataType: "jsonp",
      url: uri,
      jsonpCallback: 'response',
      cache: false,
      contentType: "application/json",
      success: function(json){
        callback(json);
      }
    });
  }

This is my response

response({"_id":"561713a78693609968e3bbdd","event":"ConfbridgeJoin","channel":"SIP/192.168.236.15-00000024","uniqueid":"1444352918.94","conference":"0090000293","calleridnum":"0090000288","calleridname":"0090000288","__v":0,"status":false,"sipSetting":{"accountcode":"0302130000","accountcode_naisen":"201","extentype":0,"extenrealname":"UID1","name":"0090000288","secret":"Myojyo42_f","username":"0090000288","context":"innercall_xdigit","gid":101,"cid":"0090000018"}})

Thanks :)

It is very dificult to answer without the 'structure' of `json` in the response — Anonymous0day, Oct 13 '15 at 07:48
It's still unclear what "count the object" means. An object is a single thing. So it's "1". — Felix Kling, Oct 13 '15 at 07:55
I assume you mean "count the properties", which is a duplicate. If not, please clarify your question. — Felix Kling, Oct 13 '15 at 08:03

score 5 · Accepted Answer · answered Oct 13 '15 at 07:50

You can try this:

Object.keys(jsonArray).length;

to get the number of items in your JSON object.

Also refer Object.keys

Object.keys() returns an array whose elements are strings corresponding to the enumerable properties found directly upon object. The ordering of the properties is the same as that given by looping over the properties of the object manually.

score 0 · Answer 2 · answered Oct 13 '15 at 07:48

0

You can

success: function(json){
    console.log('Object keys length: ' + Object.keys(json).length)
    callback(json);
}

For example {a:1, b:2, c:'Batman'} gives 3 as an answer

answered Oct 13 '15 at 07:48

divoom12

792
3
12

Anonymous0day · Answer 3 · 2015-10-13T08:03:04.567

0

One Solution

 var uri = pbxApi+"/conference/participants/"+circle+"/"+data.conference+"/"+data.uniqueid+'?jsonp=response';

var getJsonData = function(uri,callback){
    return $.ajax({ // <----- note the return !
      type: "GET",
      dataType: "jsonp",
      url: uri,
      jsonpCallback: 'response',
      cache: false,
      contentType: "application/json",
      success: function(json){
        if(callback) callback(json);
      }
    });
  }

getJsonData(uri, function(res){
  console.log( Objec.keys(res).length) );
});

// with the return you will be able to do :
getJsonData(uri)
  .done( function(res){
    console.log( Objec.keys(res).length) );
  })
  .error(function( err ){
     console.log('an error ?? what is it possible ?');  
  });

edited Oct 13 '15 at 08:03

answered Oct 13 '15 at 07:59

Anonymous0day

2,662
1
11
15

What's so important about the `return`? You are not even making use of it. – Felix Kling Oct 13 '15 at 08:00
To chain without callback, i will update my answer to understand – Anonymous0day Oct 13 '15 at 08:00
That doesn't seem to have anything to do with the question though. – Felix Kling Oct 13 '15 at 08:01
@FelixKling you right ! it is a plus ! :-) – Anonymous0day Oct 13 '15 at 08:05

How to count json object in javascript

3 Answers3