Show Div when scroll position

Question

First of all i would like to refer to this website: http://annasafroncik.it/ I love the way the animations come into view. Is it hard to create a similar function in jquery? Are there any plugins to create such an effect?

Hope someone will help me out.

Answer 1

Basically, you want to add a "hideme" class to every element you want hidden (then you set that class to "opacity:0";

Then, using jQuery you set a $(window).scroll() event to check the location of the bottom of every "hideme" element against the bottom edge of your visible window.

Here's the meat of it ...

/* Every time the window is scrolled ... */
$(window).scroll( function(){

    /* Check the location of each desired element */
    $('.hideme').each( function(i){

        var bottom_of_object = $(this).offset().top + $(this).outerHeight();
        var bottom_of_window = $(window).scrollTop() + $(window).height();

        /* If the object is completely visible in the window, fade it in */
        if( bottom_of_window > bottom_of_object ){

            $(this).animate({'opacity':'1'},500);

        }

    }); 

});

Here's a full jsfiddle: http://jsfiddle.net/tcloninger/e5qaD/