jQuery create object из полей формы

How can I create a object with a form's fields and values?

like this one:

{
  fields:
   {
      name: 'foo',
      email: 'foo@moo.com',
      comment: 'wqeqwtwqtqwtqwet'     

   }
}

assuming the form looks like this:

<form>
  <input type="text" name="name" value="foo" />
  <input type="text" name="email" value="foo@moo.com" />
  <textarea name="comment">wqeqwtwqtqwtqwet</textarea>
</form>

I need to know how can I do this for any form with a single function, not just a particular form.