JQuery getJSON - ajax parseerror

Question!

I've tried to parse the following json response with both the JQuery getJSON and ajax:

[{"iId":"1","heading":"Management Services","body":"<h1>Program Overview</h1><h1>January 29, 2009</h1>"}]

I've also tried it escaping the "/" characters like this:

[{"iId":"1","heading":"Management Services","body":"<h1>Program Overview <\/h1><h1>January 29, 2009<\/h1>"}]

When I use the getJSON it dose not execute the callback. So, I tried it with JQuery ajax as follows:

$.ajax({
    url: jURL,
    contentType: "application/json; charset=utf-8",
    dataType: "json",
    beforeSend: function(x) {
        if(x && x.overrideMimeType) {
            x.overrideMimeType("application/j-son;charset=UTF-8");
        }
    },
    success: function(data){
        wId = data.iId;
        $("#txtHeading").val(data.heading);
        $("#txtBody").val(data.body);
        $("#add").slideUp("slow");
        $("#edit").slideDown("slow");
    },//success
    error: function (XMLHttpRequest, textStatus, errorThrown) {
        alert("XMLHttpRequest="+XMLHttpRequest.responseText+"\ntextStatus="+textStatus+"\nerrorThrown="+errorThrown);
    }
});

The ajax hits the error ans alerts the following:

XMLHttpRequest=[{"iId":"1","heading":"Management Services","body":"<h1>Program Overview </h1><h1>January 29, 2009</h1>"}]

textStatus=parseerror

errorThrown=undefined

Then I tried a simple JQuery get call to return the JSON using the following code:

$.get(jURL,function(data){
    var json = eval("("+data+");");
    wId = json.iId;
    $("#txtHeading").val(json.heading);
    $("#txtBody").val(json.body);
    $("#add").slideUp("slow");
    $("#edit").slideDown("slow");
})

The .get returns the JSON, but the eval comes up with errors no matter how I've modified the JSON (content-type header, other variations of the format, etc.)

What I've come up with is that there seem to be an issue returning the HTML in the JSON and getting it parsed. However, I have hope that I may have missed something that would allow me to get this data via JSON. Does anyone have any ideas?

By : francesco


Answers

Don't use an array box, and make sure you format your data properly:

{"account":{"iId":"1","heading":"Management Services","body":"<h1>Program Overview</h1><h1>January 29, 2009</h1>"}}


This is a working example and tested!

<script type="text/javascript">

function fetchData() {
var dataurl = "pie.json";
$.ajax({
    url: dataurl,
    cache: false,
    method: 'GET',
    dataType: 'json',
    success:  function(series) {
        var data = [];
        //alert(series.length);
        for (var i=0; i<series.length;i++){
            data[i]=series[i];
        }

        $.plot(
                $("#placeholder"), 
                data, 
                {
                     series: {
                       pie: {
                         show: true,
                         label: {
                           show: true
                         }
                     }
                    },
                    legend: {
                      show: true
                    }
                  }
       );
     }
});

   //setTimeout(fetchData, 1000);
}
</script>

And the json source is the following (pie.json):

[{ "label": "Series1",  "data": 10},
{ "label": "Series2",  "data": 30},
{ "label": "Series3",  "data": 90},
{ "label": "Series4",  "data": 70},
{ "label": "Series5",  "data": 80},
{ "label": "Series6",  "data": 110}]


also try this

$.ajax({
    url: url,
    data:datas,
    success:function(datas, textStatus, jqXHR){
    var returnedData = jQuery.parseJSON(datas.substr(datas.indexOf('{')));
})};

in my case server responds with unknow character before '{'

By : valir


This video can help you solving your question :)
By: admin