javascript - how to show data date wise according to json response?

Question

i have a json response in this format:

[{"message":"fsbdfs","id":"8290","readBy":"2016-05-25 06:17:01","userID":"339","dateTime":"2016-05-25
 06:16:32"},{"message":"Hi","id":"8291","readBy":"2016-05-25 06:33:52","userID":"332","dateTime":"2016-05-25
 06:17:06"},{"message":"nbfsdbf","id":"8292","readBy":"","userID":"339","dateTime":"2016-05-25 07:03
:44"},{"message":"jsdhfjsdhf","id":"8293","readBy":"","userID":"339","dateTime":"2016-05-25 07:06:55"
},{"message":"fbsnf","id":"8294","readBy":"","userID":"339","dateTime":"2016-05-25 07:06:59"},{"message"
:"dfgjdf","id":"8295","readBy":"","userID":"339","dateTime":"2016-05-25 07:08:14"},{"message":"sim","id"
:"8296","readBy":"","userID":"339","dateTime":"2016-05-25 07:24:24"},{"message":"mgmdf,","id":"8297"
,"readBy":"","userID":"339","dateTime":"2016-05-25 10:16:34"},{"message":"bvd","id":"8317","readBy":""
,"userID":"339","dateTime":"2016-05-31 06:25:40"},{"message":"fdfd","id":"8318","readBy":"","userID"
:"339","dateTime":"2016-05-31 06:25:43"}]

I want to show these messages in chat box but date wise like first show date 25 May 2015 then message and all the message related to that date shown in this after new date come its shown that in next time 31 May 2015 message 1 message 2 so on.

And i am printing like this, its simply append the message but i need to filter it with date and time.

for (i = 0; i < msg1.length; i++) { 


    var el = $('<li class="message right appeared"><div class="avatar"><img src="'+url+'/service/getUserImage/'+msg1[i].userID +'/60"/></div><div class="text_wrapper"><div class="text">'+msg1[i].message+'</div></div></li>');
                 $(".chat_window ul").append(el);


                    }

Answer 1

Following code can do the grouping by date

var obj = [{
  "message": "fsbdfs",
  "id": "8290",
  "readBy": "2016-05-25 06:17:01",
  "userID": "339",
  "dateTime": "2016-05-25 06:16:32"
}, {
  "message": "Hi",
  "id": "8291",
  "readBy": "2016-05-25 6:33:52",
  "userID": "332",
  "dateTime": "2016-05-25 06:17:06"
}, {
  "message": "nbfsdbf",
  "id": "8292",
  "readBy": "",
  "userID": "339",
  "dateTime": "2016-05-25 07:03:44"
}, {
  "message": "jsdhfjsdhf",
  "id": "8293",
  "readBy": "",
  "userID": "339",
  "dateTime": "2016-05-25 07:06:55"
}, {
  "message": "fbsnf",
  "id": "8294",
  "readBy": "",
  "userID": "339",
  "dateTime": "2016-05-25 07:06:59"
}, {
  "message": "dfgjdf",
  "id": "8295",
  "readBy": "",
  "userID": "339",
  "dateTime": "2016-05-25 07:08:14"
}, {
  "message": "sim",
  "id": "8296",
  "readBy": "",
  "userID": "339",
  "dateTime": "2016-05-25 07:24:24"
}, {
  "message": "mgmdf,",
  "id": "8297",
  "readBy": "",
  "userID": "339",
  "dateTime": "2016-05-25 10:16:34"
}, {
  "message": "bvd",
  "id": "8317",
  "readBy": "",
  "userID": "339",
  "dateTime": "2016-05-31 06:25:40"
}, {
  "message": "fdfd",
  "id": "8318",
  "readBy": "",
  "userID": "339",
  "dateTime": "2016-05-31 06:25:43"
}];

obj.sort(function(a, b) {
  return a.dateTime.localeCompare(b.dateTime)
});

var map = {};
obj.forEach(function(val) {
  var date = val.dateTime.split(" ")[0];
  map[date] = map[date] || [];
  map[date].push(val)
});

console.log(map)