$.serializeObject is a variant of existing $.serialize method which, instead of encoding form elements to string, converts form elements to a valid JSON object which can be used in your JavaScript application.

Whilst it isn't necessary in most cases, and by that I mean 99.99% kind of most, there are times when we manipulate form data on client side. Personally I find JSON much easier to work with than DOM or string manipulation.

Simply include the jQuery.serializeObject.js along with any jQuery instance and use it like $.serialize.

If you have a form like the following:

<form id="minutes">
	<input type="text" name="subject">
	<input type="text" name="minute-taker">
	<!-- ... -->
	<input type="checkbox" name="attendees" value="David" checked="checked">
	<input type="checkbox" name="attendees" value="Daniel" checked="checked">
	<input type="checkbox" name="attendees" value="Darwin" checked="checked">
</form>

and wish to convert them to a JSON object:

var minutes = $('form#minutes').serializeObject();

will return:

{
  "subject": "",
  "minute-taker": "",
  "attendees": [
    "David",
    "Daniel",
    "Darwin"
  ]
}

See here

• In rare cases, this won't work with old checkbox/hidden hack. See this issue for more details.