jquery scroll down code example
Example 1: jquery on scroll down
Check current scrollTop vs previous scrollTop
var lastScrollTop = 0;
$(window).scroll(function(event){
var st = $(this).scrollTop();
if (st > lastScrollTop){
// downscroll code
} else {
// upscroll code
}
lastScrollTop = st;
});
Example 2: jquery on wheel event
$("#main-div" ).on( 'wheel', function() {
alert("Hello! I am an alert box!!");
});