jQuery slideDown with easing

Question

How can use the slideDown() function with easing?

Maybe extend it somehow?

I'm looking for something like this:

jQuery.fn.slideDown = function(speed, easing, callback) {
  return ...
};

So i can use it slide this

$('.class').slideDown('400','easeInQuad');

or this

$('.class').slideDown('400','easeInQuad',function(){
   //callback
});

Answer 1

Take a look at this page, which contains many easing functions: http://gsgd.co.uk/sandbox/jquery/easing/

Using that plugin you can do things like:

$(element).slideUp({
    duration: 1000, 
    easing: method, 
    complete: callback});

Answer 2

You can use the animate method with jQueryUI and the easing effects like this:

$(".demo").animate({height: "hide"}, 1500, "easeInQuad", function(){});