Smooth mouse wheel scrolling

Question

I use chrome and scrolling is fast but its dont smooth. Text jumps multiple times. But on this site http://www.if-not-true-then-false.com/ scroll works very smooth! And FAST! http://bassta.bg/demos/smooth-page-scroll/ This scroll is smooth but very sloow and lagga (fast mount wheel dont change speed of scroll screen) How this site have this smooth scroll? I cant find it(

Answer 1

First make a link with #top link then try the following code try this

<script type="text/javascript">
$("a[href='#top']").click(function() {
  $("html, body").animate({ scrollTop: 0 }, 1000);//here you can specify your time for smooth operation
  return false;
});
</script>

Answer 2

try this one

<script type="text/javascript">
if (window.addEventListener) window.addEventListener('DOMMouseScroll', wheel, false);
window.onmousewheel = document.onmousewheel = wheel;

function wheel(event) {
    var delta = 0;
    if (event.wheelDelta) delta = event.wheelDelta / 120;
    else if (event.detail) delta = -event.detail / 3;

    handle(delta);
    if (event.preventDefault) event.preventDefault();
    event.returnValue = false;
}

function handle(delta) {
    var time = 1000;
    var distance = 300;

    $('html, body').stop().animate({
        scrollTop: $(window).scrollTop() - (distance * delta)
    }, time );
}
</script>