// Initial state
var scrollPos = 0;
// adding scroll event
window.addEventListener('scroll', function(){ scrolling() });
// the function : compares the "new" scrolling state with the previous
// (this allows detecting either "up" or "down" scrolling)
// then saves the new in the $previous for the next iteration.
function scrolling() {
if ((document.body.getBoundingClientRect()).top > scrollPos) {
console.log('scrolling DOWN');
} else {
console.log('scrolling UP');
}
scrollPos = (document.body.getBoundingClientRect()).top;
}
javascript vanilla
http://lehollandaisvolant.net/?mode=links&id=20160224192625
<iframe width="100%" height="488" src="http://raphael.salique.fr/snippetvamp/index.php?embed=56d2d85282db9" type="text/html"></iframe>
Texte seul - Permalink - Snippet public posté le 28/02/2016