jquery html() does not return changed values

Question

I have a form with a textbox like this:

Answer 1

$('[type=text], textarea').each(function(){ this.defaultValue = this.value; });
$('[type=checkbox], [type=radio]').each(function(){ this.defaultChecked = this.checked; });
$('select option').each(function(){ this.defaultSelected = this.selected; });

then

$("body").html()