Pushing data into an array in a Json object

Question

I need to push an an object into an array in in a Json file. To make it simple lets say that my Json looks like this:

var JsonObj = {
"elements" : []
}

I tried Push() method but it didnt work. tried also to assign to JsonObj.elements[0]= ... it also fails. How can i make it work?

"I need to push an an object into an array in in a Json file." You can't really modify a file with client side JavaScript. Please provide more information. — Felix Kling
– Felix Kling, Commented Apr 1, 2015 at 15:17
If u target - at re-write file ON server - u have to ajax to back-end (ruby, nodejs, php and etc..) and re-write file in back-end with data from javascript throw ajax — Legendary
– Legendary, Commented Apr 1, 2015 at 15:18
So you don't actually want to write to a file? You simply want to mutate a JavaScript object/array? — Felix Kling
– Felix Kling, Commented Apr 1, 2015 at 15:31

Legendary · Accepted Answer · 2015-04-01 15:16:47Z

1

Try that way, it has to work:

JsonObj.elements.push(1);

FIddle: https://jsfiddle.net/29qa4bfw/1/

edited Apr 1, 2015 at 15:16

answered Apr 1, 2015 at 15:09

Legendary

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Fourat · Accepted Answer · 2015-04-01 15:13:30Z

0

This is basic Javascript. nothing to do with Json or jQuery:

var jsonObj = {
"elements" : []
};

jsonObj.elements.push(1);
jsonObj.elements.push(1.5);
jsonObj.elements.push("some text");
jsonObj.elements.push({element: "some element"});

Here's a jsbin to fool around with: http://jsbin.com/hajale/2/edit

answered Apr 1, 2015 at 15:13

Fourat

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