Json Undefined Error Javascript

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is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Why JSON.stringify giving JSON undefined error? up vote 3 down vote favorite json undefined value I am trying to use JSON.stringify in my javascript page (EXTJS) code but it's giving me JSON is undefined error. Error happends only in IE (ver.10). This code will work in FF and Chrome. Below is a sample code that I am trying to use. Why is it failing? This seems like a valid example and works in other browsers. Thanks in advance. var contact = new Object(); contact.firstname = json2.js download "Joe"; contact.surname = "Smith"; contact.gendere= "male"; var jsonText = JSON.stringify(contact); javascript json extjs share|improve this question edited Oct 22 '13 at 7:55 SheetJS 12.2k63755 asked Jun 18 '13 at 15:40 JS11 781614 What happens when you use {} instead of new Object()? Does it work if you use a hardcoded object like { firstname : 'Joe', surname : 'Smith', gendere : 'male' }? –schlingel Jun 18 '13 at 16:01 Hi schlingel, I get same error "JSON undefined" when I hard code. –JS11 Jun 18 '13 at 16:12 add a comment| 3 Answers 3 active oldest votes up vote 2 down vote accepted Use if you only need to support IE10. If you need to use earlier versions of IE (some people still need to support IE6) you can use the JS implementation of JSON: https://github.com/douglascrockford/JSON-js share|improve this answer answered Jun 18 '13 at 15:44 SheetJS 12.2k63755 works perfectly on IE9 too. –Denys Séguret Jun 18 '13 at 15:48 Ok I tried but no effect, same problem, JSON undetified error. Any other ideas? –JS11 Jun 18 '13 at 15:52 @JS11 did you try using the JSON-js implementation from my response? &n

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Javascript Runtime Error: 'json' Is Undefined

million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up JSON undefined error using JQuery up vote 0 down vote favorite My Javascript alert's undefined when trying to read http://stackoverflow.com/questions/17173153/why-json-stringify-giving-json-undefined-error the following JSON string: [ { "number_messages":"3" }, { "message1":"abc" }, { "message2":"c" }, { "message3":"a" } ] I am using AJAX to get this string (it gets trough correctly. resp=jQuery.parseJSON(response); alert( resp.number_messages ); My ajax call is: $.ajax({ type: 'POST', url: 'backend2.php', data: dataString, success: submitFinished, dataType: 'json' }); This alerts "undefined", no errors show up in dragonfly (it's like firebug but for opera). I am quite new to the whole http://stackoverflow.com/questions/8452618/json-undefined-error-using-jquery JSON JQuery thing, so it's prob. something really easy, but I can't seem to figure it out. I've searched for answers and edited my code for over an hour, and still haven't got it to work. javascript jquery json share|improve this question edited Dec 9 '11 at 22:46 asked Dec 9 '11 at 22:40 Boelensman1 13513 Add your ajax call please –DMoses Dec 9 '11 at 22:41 Where's response coming from? Chances are it doesn't contain the JSON string, but a response object. –Jonathan M Dec 9 '11 at 22:43 stackoverflow.com/questions/5791356/… –Dan Heberden Dec 9 '11 at 22:46 add a comment| 2 Answers 2 active oldest votes up vote 3 down vote accepted Try this: alert( resp[0].number_messages ); share|improve this answer answered Dec 9 '11 at 22:42 Jake Feasel 12.1k13152 Thanks, that did the trick! –Boelensman1 Dec 9 '11 at 22:44 You do see why that worked, right? It's because you have an array of structures (so you'll have to address each of the other elements with the appropriate index). –Jake Feasel Dec 9 '11 at 22:45 Yes, it's all clear now. Had been trying with .each because I figured it might be an array but didn't get it to work. –Boelensman1 Dec

by older browsers that have not implemented the JSON object. The solution to this error is to download the json2 library and include it in your script, as shown http://www.devcurry.com/2010/12/resolve-json-is-undefined-error-in.html below: The application uses the json2.js library for browsers that haven't implemented the https://forum.jquery.com/topic/json-is-undefined-with-jquery-min-2-0-3-on-ie-11 JSON object yet. After adding the json2.js library, you can now test the application on IE7 and you will get the desired output Note: All the latest browsers like Firefox 3.5+, IE 8+, Chrome, Safari 4+ etc. have built-in JSON capability. You also want to look at Is my JSON valid? is undefined Will you give this article a +1 ? Thanks in advance About The Author Suprotim Agarwal, ASP.NET Architecture MVP (Microsoft Most Valuable Professional) works as an Architect Consultant and provides consultancy on how to design and develop Web applications.Suprotim is also the founder and primary contributor to DevCurry, DotNetCurry and SQLServerCurry. He is the Editor of a Developer Magazine called DNC Magazine. He has also json is undefined written two EBooks 51 Recipes using jQuery with ASP.NET Controls. and The Absolutely Awesome jQuery CookBookFollow him on twitter @suprotimagarwal Posted by Suprotim Agarwal 15 comments: Anonymous said... I get this error on IE8 also. January 17, 2011 at 7:53 AM Suprotim Agarwal said... That could be as you are running IE8 in compatibility mode? January 17, 2011 at 9:00 PM Lucho said... Thanks a lot man. It really helped me out. Many thanks from Argentina =) Have a good day! bye. January 18, 2011 at 7:54 PM Anonymous said... Perfect one..Thanks a lot.. March 17, 2011 at 10:19 AM wildkaz said... Awesome man. You saved my life. Thanks (*follow*) July 19, 2011 at 7:23 AM Srinivasan said... Its really cooll man. September 22, 2011 at 1:34 AM balaram said... thanks it works for me perfectly December 11, 2011 at 9:22 PM mjwouda said... Excellent! Finally I get the Google Maps API in IE7 working! Thanks for sharing. February 16, 2012 at 6:01 AM Anonymous said... Oh man. Thanks for this help. You saved my week May 9, 2012 at 10:30 AM Anonymous said... Thank you! You solved my problem! June 19, 2012

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