Javascript JSON stringify No Numeric Index to include in Data

Question

i am trying to pass non numeric index values through JSON but am not getting the data.

var ConditionArray = new Array();
ConditionArray[0] = \"1\";
ConditionArra         


        

Answer 1

If you change the first line to

var ConditionArray = new Object();

you will achieve the desired outcome.

Answer 2

this is the way how I solved this problem Where tblItemsTypeform is array and arrange is de index of the array :

let itemsData = [];
   

    for(var i = 0; i <= this.tblItemsTypeform.length -1;i++){
        let itemsForms = {
            arrange: i,
            values: this.tblItemsTypeform[i]
        }
        itemsData.push(itemsForms)
    }

And finally use this in a variable to send to api:

var data = JSON.stringify(itemsData)

Answer 3

JSON structure only recognizes numeric properties of an Array. Anything else is ignored.

You need an Object structure if you want to mix them.

var ConditionArray = new Object();

Answer 4

This is because Array does not contain your elements.

When you do this:

ConditionArray['module'] = "Test";

You actually add a property to the ConditionArray, not elements. While JSON.stringify converts to string only elements of the ConditionArray. For example:

var arr = new Array;
arr['str'] = 'string';
console.log(arr.length) //outputs 0

You need to use an Object instead of Array

Answer 5

According to the algorithm for JSON.stringfy (step 4b), only the (numeric) indices of arrays are stringified.

Answer 6

Since javascript array accepts numeric index only. If you want non numeric index,use Object instead.

var ConditionArray = {};
ConditionArray[0] = "1";
ConditionArray[1] = "2";
ConditionArray[2] = "3";

ConditionArray['module'] = "Test";
ConditionArray['table']  = "tab_test";
var Data = JSON.stringify(ConditionArray);

Here is the working DEMO : http://jsfiddle.net/cUhha/