Question

I’m trying to figure out how I can do something (alert) when all the stuff has finished fading in. Maybe my syntax is not good?

    $.fn.showdelay = function(){
            var delay = 0;
            return this.each(function(){
                $(this).delay(delay).fadeIn(200);
                delay += 200;
            },
            function(){ 
                alert('done!');
            });
        };
    $item.delay(500).showdelay();

Answer 1

Utilize the callback function parameter in the fadeIn method:

$.fn.showdelay = function(){
        var delay = 0, count = $(this).length - 1;

        return this.each(function(i){
            $(this).delay(delay).fadeIn(200, function() {
                if(i == count) alert('something');
            });
            delay += 200;
        });
    };
$item.delay(500).showdelay();

http://api.jquery.com/fadeIn/