$.serializeObject is a variant of existing $.serialize method which, instead of encoding form elements to string, converts form elements to a valid JSON object.

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.

If you want to see the code and demo first: http://jsfiddle.net/davidhong/gP9bh/

Simple 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="text" name="attendees" />
  ...
</form>

and wish to convert them to a JSON object:

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

will return:

{
  subject: '',
  minuteTaker: '',
  attendees: ''
}