jQuery

#javascript

$(event.currentTarget).val(); can get the value from form elements.
.change() method can be used among <input>,<textarea> and <select>. It triggers an event when the value is changed with a mouse.
.addClass(className) and .removeClass(className) both don't have a period inside the parenthesis.
$('#id').animate({},time) the first parameter is an object containing the css properties.
$(this) inside the event handler doesn't need to run the second DOM query.
parent.append(child) will add the child to the parent
$('target').attr('id', 'value_of_your_id') add an id to the target
slim jQuery doesn't have JQuery UI