Serializing to JSON in jQuery [duplicate] – Dev

The best answers to the question “Serializing to JSON in jQuery [duplicate]” in the category Dev.


I need to serialize an object to JSON. I’m using jQuery. Is there a “standard” way to do this?

My specific situation: I have an array defined as shown below:

var countries = new Array();
countries[0] = 'ga';
countries[1] = 'cd';

and I need to turn this into a string to pass to $.ajax() like this:

    type: "POST",
    url: "Concessions.aspx/GetConcessions",
    data: "{'countries':['ga','cd']}",


I’ve been using jquery-json for 6 months and it works great. It’s very simple to use:

var myObj = {foo: "bar", "baz": "wockaflockafliz"};

// Result: {"foo":"bar","baz":"wockaflockafliz"}


JSON-js – JSON in JavaScript.

To convert an object to a string, use JSON.stringify:

var json_text = JSON.stringify(your_object, null, 2);

To convert a JSON string to object, use JSON.parse:

var your_object = JSON.parse(json_text);

It was recently recommended by John Resig:

…PLEASE start migrating
your JSON-using applications over to
Crockford’s json2.js. It is fully
compatible with the ECMAScript 5
specification and gracefully degrades
if a native (faster!) implementation

In fact, I just landed a change in jQuery yesterday that utilizes the
JSON.parse method if it exists, now
that it has been completely specified.

I tend to trust what he says on JavaScript matters 🙂

All modern browsers (and many older ones which aren’t ancient) support the JSON object natively. The current version of Crockford’s JSON library will only define JSON.stringify and JSON.parse if they’re not already defined, leaving any browser native implementation intact.


I haven’t used it but you might want to try the jQuery plugin written by Mark Gibson

It adds the two functions: $.toJSON(value), $.parseJSON(json_str, [safe]).


Works on IE8+

No need for jQuery, use: