javascript - JS: How to append array with variable into JSON? - Stack Overflow

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Given the following data:

var json = [ 
{ 'myKey': 'A', 'status': 0 },
{ 'myKey': 'B', 'status': 1 },
{ 'myKey': 'C', 'status': 1  },
{ 'myKey': 'D', 'status': 1 }
];

I want to append a new array with a variable "Id", something like :

var Id = "aNewLetterFunction";
json.push({'myKey':'+Id+','status':1}); //this doesn't work

How can I do, since the +Id+ is not natively considered as a variable ? JSfiddle appreciate.

EDIT: fiddle available

---

I tried various things such :

json.push('{"myKey":"'+Id+'","status":1},');

or

var ar1 = '{"myKey":"';
var Id = Id;
var ar2 = '","status":1},';
json.push(ar1+Id+ar2);

Given the following data:

var json = [ 
{ 'myKey': 'A', 'status': 0 },
{ 'myKey': 'B', 'status': 1 },
{ 'myKey': 'C', 'status': 1  },
{ 'myKey': 'D', 'status': 1 }
];

I want to append a new array with a variable "Id", something like :

var Id = "aNewLetterFunction";
json.push({'myKey':'+Id+','status':1}); //this doesn't work

How can I do, since the +Id+ is not natively considered as a variable ? JSfiddle appreciate.

EDIT: fiddle available

---

I tried various things such :

json.push('{"myKey":"'+Id+'","status":1},');

or

var ar1 = '{"myKey":"';
var Id = Id;
var ar2 = '","status":1},';
json.push(ar1+Id+ar2);

• javascript
• jquery
• json
• string

Share Improve this question Follow edited Feb 12, 2013 at 21:06 Hugolpz asked Feb 12, 2013 at 19:46 HugolpzHugolpz 18.3k2828 gold badges105105 silver badges191191 bronze badges

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3 Answers 3

Sorted by: Reset to default 3

json is probably not a good variable name since you have an array of objects, and JSON is, by definition, a string.

That note aside, you would just construct an object literal and push that:

var Id = "aNewLetterFunction";
json.push({
    myKey: Id,
    status: 1 
});

Create an object, don't create a JSON string:

json.push({
    myKey:Id,
    status:'1'
});

You don't want to add another value to the JSON but to the array that can be parsed to a JSON string, but isn't a string.

Live DEMO

Just use

json.push({'myKey':Id, 'status':1});

You don't want a string with the variables name, but use the variable?

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