Parse response retrieved from url in json

Question

I want to create a parser for login page. I have a url that gives response in json. When not logged in it gives response as :

{"status":0,"msg":"Email is Wrong!"}

and when loggged in it gives :

{"status":1,"msg":"Session is active","session_id":"lp47ngp9hlqtrkunjirqa7ijg5","user_id":"13"}

I have no idea how to start this. Please help... Thanks in advance!

possible duplicate of [how to parse json in javascript](http://stackoverflow.com/questions/4935632/how-to-parse-json-in-javascript) — Matt, Feb 17 '12 at 11:10

score 1 · Answer 1 · answered Feb 17 '12 at 11:14

Not sure if I'm understanding a real question here, but as I understand it, try using jquery ajax to retrieve your json from the url. In the call to ajax, there'll be a parameter called success, that takes a function with one argument. That argument will be the data retrieved from the url. Simply do obj = eval(data), and your data will be parsed and you can access the status as obj.status.

score 1 · Answer 2 · answered Feb 17 '12 at 11:32

1

Using plain javascript you can use JSON.parse to convert the JSON string to a Javascript Object.

Something like:

var response = JSON.parse([yourJsonString]);
if (response.session_id) {
  // logged in, proceed
} else {
  // not logged in, act accordingly
}

JSON.parse is available in modern browsers. For older browsers you need to include a JSON parser like this one (use json2.js)

answered Feb 17 '12 at 11:32

KooiInc

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Using Bing and JSON $.getJSON('url', function (data) { alert(data.status); // 1 alert(data.msg); // List of rooms });

This is the code on which i am working
– SONAL KASLIWAL Feb 17 '12 at 11:34

score 0 · Answer 3 · answered Feb 17 '12 at 11:12

0

If you use jquery and jquery.ajax/jquery.get, etc., you will receive a response in the form of a javascript object that you may use to react accordingly.

Jquery is an excellent javascript library very very widely used. It's kind of a defacto standard.

Just google it and you will find a lot of information, tutorials, books. In Stack Overflow you will find a lot of material on this topic.

answered Feb 17 '12 at 11:12

unludo

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There is no mention of using jQuery in the question and it is not hard to parse JSON *without* using jQuery. – Matt Feb 17 '12 at 11:16
@Matt But there is also no mention on not using it. – unludo Feb 17 '12 at 11:17

score -1 · Answer 4 · edited Feb 20 '12 at 14:55

-1

You can use the jQuery parseJSON method to parse the JSON string into Javascript object http://api.jquery.com/jQuery.parseJSON/

edited Feb 20 '12 at 14:55

BoltClock

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answered Feb 17 '12 at 11:14

copenndthagen

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if you use jquery.ajax, the conversion is done for you. No need to do this. – unludo Feb 17 '12 at 11:16
There is no mention of using jQuery in the question and it is not hard to parse JSON *without* using jQuery. – Matt Feb 17 '12 at 11:16
But you are proposing jquery! (I did not down vote you though) – unludo Feb 17 '12 at 11:18

Parse response retrieved from url in json

4 Answers4