?
Solved

Loop through Json query  with Jquery

Posted on 2015-01-29
2
Medium Priority
?
121 Views
Last Modified: 2015-02-08
I have a function that is being processed from a Jquery .post.

this is the data returned  serializedJSON from Coldfusion Query :

{"COLUMNS":["STREETNAME","PRICE","LATITUDE","LONGITUDE"],"DATA":[["CO RD 167","$289000",33.972765,-87.106866],["COUNTY ROAD 858","$259900",34.0751509,-87.0271391],["COUNTY ROAD 4235","$799900",34.0008489,-87.113152],["COUNTY ROAD 208","$244900",34.008413,-87.071838],["CR-232","$29000",34.0519273,-87.0824045],["TURTLE POINT","$399900",34.0519273,-87.0824045],["WATERDOG DRIVE","$409900",34.0519273,-87.0824045],["TURTLE POINT","$509900",34.0519273,-87.0824045],["TURTLE POINT","$359900",34.0519273,-87.0824045],["TURTLE POINT DR.","$499900",34.0519273,-87.0824045],["TURTLE POINT DR","$309900",34.0519273,-87.0824045],["COUNTY ROAD 196","$284900",34.016861,-87.10466],["CO RD 96","$299900",34.0303875,-87.0546095],["CO RD 187","$179000",34.0001995,-87.08876],["CO RD 184","$789000",33.978721,-87.1019701],["CO RD 208","$349000",34.0117843,-87.0706031],["COUNTY ROAD 164","$249900",33.9784786,-87.110881],["COUNTY ROAD 215","$1.695e+006",34.0358949,-87.0468889],["COUNTY ROAD 170","$529900",33.9691566,-87.1119235],["COUNTY ROAD 881","$339900",34.0440657,-87.0335399],["COUNTY ROAD 330","$439900",34.0448215,-87.0646441],["COUNTY ROAD 938","$199900",34.0785174,-87.1000404],["COUNTY ROAD 222","$325000",34.0288084,-87.0608674],["POINT WILLIAM LANE","$649000",34.0519273,-87.0824045],["POINT WILLIAM LANE","$649000",34.0519273,-87.0824045]]}
---------------------------------------------------------------------------------------------------------
//Post
      function GetMarkers(zip)
      {
            $.post( "http:/Domain/cfc.cfc?method=GetMapMarkers&zip=35053")
            .done(function( data ) {
        //alert( "Data Loaded: " + data );
            setmarker( data );
                });
      }

//function to handle the post
   function setmarker(data)
   {
        
                     alert(data);// if is ok here

      var item=data;
             
        console.debug(item.COLUMNS[0])
        console.debug(item.COLUMNS[1])
    $.each(item.DATA, function(index,item) {        
        console.debug(item[0])
        console.debug(item[1])
        });
   
      }


ERROR IS item.COLUMNS is undefined
0
Comment
Question by:leadcodev
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 18

Accepted Solution

by:
nap0leon earned 2000 total points
ID: 40579614
You data is just a string until you tell your code that it is JSON.
Load json2.js onto your page (you can get it from here: https://github.com/douglascrockford/JSON-js/blob/master/json2.js )
Then run a command such as this:
data = JSON.parse(data)

Open in new window


On a page with jQuery and json2.js, this works:
var data = '{"COLUMNS":["STREETNAME","PRICE","LATITUDE","LONGITUDE"],"DATA":[["CO RD 167","$289000",33.972765,-87.106866],["COUNTY ROAD 858","$259900",34.0751509,-87.0271391],["COUNTY ROAD 4235","$799900",34.0008489,-87.113152],["COUNTY ROAD 208","$244900",34.008413,-87.071838],["CR-232","$29000",34.0519273,-87.0824045],["TURTLE POINT","$399900",34.0519273,-87.0824045],["WATERDOG DRIVE","$409900",34.0519273,-87.0824045],["TURTLE POINT","$509900",34.0519273,-87.0824045],["TURTLE POINT","$359900",34.0519273,-87.0824045],["TURTLE POINT DR.","$499900",34.0519273,-87.0824045],["TURTLE POINT DR","$309900",34.0519273,-87.0824045],["COUNTY ROAD 196","$284900",34.016861,-87.10466],["CO RD 96","$299900",34.0303875,-87.0546095],["CO RD 187","$179000",34.0001995,-87.08876],["CO RD 184","$789000",33.978721,-87.1019701],["CO RD 208","$349000",34.0117843,-87.0706031],["COUNTY ROAD 164","$249900",33.9784786,-87.110881],["COUNTY ROAD 215","$1.695e+006",34.0358949,-87.0468889],["COUNTY ROAD 170","$529900",33.9691566,-87.1119235],["COUNTY ROAD 881","$339900",34.0440657,-87.0335399],["COUNTY ROAD 330","$439900",34.0448215,-87.0646441],["COUNTY ROAD 938","$199900",34.0785174,-87.1000404],["COUNTY ROAD 222","$325000",34.0288084,-87.0608674],["POINT WILLIAM LANE","$649000",34.0519273,-87.0824045],["POINT WILLIAM LANE","$649000",34.0519273,-87.0824045]]}';
data = JSON.parse(data);
setmarker(data);

//function to handle the post
function setmarker(data) {
    alert(data);// if is ok here
    var item=data;
             
    console.debug(item.COLUMNS[0])
    console.debug(item.COLUMNS[1])
    $.each(item.DATA, function(index,item) {        
      console.debug(item[0])
      console.debug(item[1])
    });
}

Open in new window

0
 
LVL 52

Expert Comment

by:_agx_
ID: 40579855
(no points...)

Try adding

        dataType: "json"

to your $.post(...).. That should cause JQuery to convert the string into a JSON object automatically.

Update:

this is the data returned  serializedJSON from Coldfusion Query

Nothing technically wrong with it, but it's more flexible to return a plain query - no serialization.  Then if you need JSON, just add "&returnformat=json" to your url instead:

http:/Domain/cfc.cfc?method=GetMapMarkers&zip=35053&returnformat=JSON

Open in new window

0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I spent nearly three days trying to figure out how incorporate OAuth in Coldfusion for the Eventful API. Hopefully, this article will allow Coldfusion Programmers to buzz through the API when they need to. Basically, what this script does is authori…
Recently while working on a project I got a very annoying cfdocument has no body error message. I had never seen this error before. So I checked the code. The code was pretty simple; it was Just showing me the cfdocumnt tag and inside that tag a …
The viewer will learn how to dynamically set the form action using jQuery.
The viewer will learn the basics of jQuery including how to code hide show and toggles. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery…
Suggested Courses
Course of the Month15 days, 14 hours left to enroll

741 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question