error in parsing json data in javascript

Question

[
  [
    {
      "Id": 1234,
      "PersonId": 1,
      "Message": "hiii",
      "Image": "5_201309091104109.jpg",
      "Likes": 7,
      "Status": 1,
      "OtherId": 3,
      "Friends": 0
    }
  ],
  [
    {
      "Id": 201309091100159,
      "PersonId": 1,
      "Message": "heyyyyyyyy",
      "Image": "",
      "Likes": 2,
      "Status": 1,
      "OtherId": 3,
      "Friends": 3
    }
  ]
]

I am trying to parse this JSON data in javascript,but its giving an error "SyntaxError: JSON.parse: unexpected character" Tell me how to parse or access this json data and how to get numbers of records saved in JSON data.

I am running this on firefox ..Please help me to resolve this problem.Thanks in advance

The JSON is valid (even though the structure is a bit odd). Maybe you are trying to parse something that is not JSON. Please post your code. — Felix Kling
– Felix Kling, Commented Sep 19, 2013 at 8:58
This is not JSON. ITs just object literal. Post your JSON which is string. — Shiplu Mokaddim
– Shiplu Mokaddim, Commented Sep 19, 2013 at 8:59
@shiplu.mokadd.im: This is JSON. Of course in JavaScript (or Python, Java, <insert language here>) JSON can only exist in a string, but JSON is a language independent data format. You can only talk about object literals in JavaScript source code, but the "code" posted here is not JavaScript. — Felix Kling
– Felix Kling, Commented Sep 19, 2013 at 8:59
One chance is there may be unicode character some where in your object like here : {‌} you are not seeing it which is inside curly braces. Paste it to notepad and use backspace you will find three chars there. — Lekhnath
– Lekhnath, Commented Sep 19, 2013 at 9:10
@FelixKling This JSON was returned by using res.send(rows) method in node.js and rows are the records selected from database. And i m receiving this JSON from a ajax function or may be i can access data like msg[0][0].Id where msg is response returned to ajax function. — Ravi
– Ravi, Commented Sep 19, 2013 at 9:24

Community · Accepted Answer · 2017-05-23 12:05:12Z

2

If your msg variable is already a Javascript object literal you can access properties in it directly like you said : msg[0][0].Id

If it is a string you can use JSON.parse() function to obtain a JS object: Parse JSON in JavaScript?

Fiddle: http://jsfiddle.net/nilgundag/EdWKv/1/

var msg1 = [
  [
    {
      "Id": 1234,
      "PersonId": 1,
      "Message": "hiii",
      "Image": "5_201309091104109.jpg",
      "Likes": 7,
      "Status": 1,
      "OtherId": 3,
      "Friends": 0
    }
  ],
  [
    {
      "Id": 201309091100159,
      "PersonId": 1,
      "Message": "heyyyyyyyy",
      "Image": "",
      "Likes": 2,
      "Status": 1,
      "OtherId": 3,
      "Friends": 3
    }
  ]
];
$("#first").text(msg1[0][0].Id);

var myJSONString = '[[{"Id": 1234,"PersonId": 1,"Message": "hiii","Image": "5_201309091104109.jpg","Likes": 7,  "Status": 1,     "OtherId": 3,      "Friends": 0    }  ],  [    {      "Id": 201309091100159,      "PersonId": 1,      "Message": "heyyyyyyyy",      "Image": "",      "Likes": 2,      "Status": 1,      "OtherId": 3,      "Friends": 3    }  ]]';
var msg2 = JSON.parse(myJSONString);
$("#second").text(msg2[0][0].Id);

edited May 23, 2017 at 12:05

CommunityBot

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answered Sep 19, 2013 at 10:04

nilgun

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1 Comment

Ravi Over a year ago

Thankss for ur answer,, now its working. I am just counting length of numbers of records returned in JSON ,using count=msg.length; and accessing all element in loop for(var i=0;i<count;i++){ msg[i][0]['Id']; }

Clover Wu · Accepted Answer · 2013-09-19 09:53:06Z

0

I thought that the json str is valid。but when that string isn't in JS enviroment..that's format is invalid.

answered Sep 19, 2013 at 9:53

Clover Wu

294 bronze badges

1 Comment

Felix Kling Over a year ago

It's valid JSON, it doesn't matter in which environment it is.

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