Issue with JSON.stringify adding a extra \ and “” to my Json object

Hi I am creating using Javascript an array of object with a key and a value using the following code.

ValuesArray.push({ key: $(this).attr('someattribute'), value: $(this).val() });

As a result I have am array of object like this:

key:29; value: 'Country'
Key:12; value: '4,3,5'

when I am trying to stringify it and send that JSON in a post I am having a wrong formatted JSON with \ and " in places that I dont want so when I try to desirales that JSON as a JObject on codebehind with C# I am having trouble. How can I create a clean JSON using the stringify

var jObject = JSON.stringify(ValuesArray);

My JSON now which is wrong is:

{
  "JObject": "[{\"key\":\"29\",\"value\":\"Country\"},  {\"key\":\"30\",\"value\":\"4,3,5\"}]"
}

I would like to have a JSON object like this

{
  "JObject": [{"key":"29","value":"Country"},{"key":"30","value":"4,3,5"}]
}

without the quotes around the [] and the character \

Any good idea to solve it.

Thank you

More detail this how I am sending the JSON to my API this is how I am sending the JSON to my Web API:

function PostAPIRequest(address) {

           var jObject = JSON.stringify(ValuesArray);

           var responseJson = null;
           $.ajax({
               url: address,
               type: 'POST',
               dataType: 'json',
               data: { JObject: jObject },
               success: function (data) {
                   responseJson = data
                   ProcessDataResponse(responseJson);
                   //TODO: REFRESH THE DATA GRID
               },
               error: function (xhr, ajaxOptions, thrownError) {
                   //TODO redirect to the error page and send error email there.
                   alert(xhr.status);
                   alert(thrownError);
               }
           })
       }

and this how I am receiving it in my API controller

...
  // POST api/datavalues/5


   public string Post(int id, JObject  value)
    {
        var temp = value;

...

Answers:

Answer

It looks like you are placing a string as the value in your map. You should do something like:

var objMap = {"JObject" : ValuesArray}; var json = JSON.stringify(objMap)

What's happening is you are double json encoding your values array - note that your "invalid" JSON value is actually a JSON string rather than the array that you want.

EDIT It looks like you are sticking in JSON strings of maps into an Array and then stringifying that. Here's a jsfiddle that should help you get what you are looking for - http://jsfiddle.net/4G5nF/

In your post request, try this

var jObject = {"JObject" : ValuesArray};
$.ajax({   url: address,
           type: 'POST',
           dataType: 'json',
           data: jObject,
           success: function (data)  { .. }});

Note the change in the data attribute. That is a value that is automatically JSONified for you.

Answer
const config = {a: 1, b: 2}
console.log(JSON.stringify(JSON.stringify(config)))

"{\"a\": 1, \"b\": 2}"

Answer

May be you have an old prototype library. As I remove it, bug has disappeared

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