Cara Membuat Animasi Scroll ke Atas

Ketika sebuah halaman web memiliki artikel atau konten yang sangat panjang untuk dibaca, untuk mempermudah pembaca kembali ke posisi paling atas, kita sebaiknya menggunakan "Animated Scroll to Top". Berikut yang saya dapat contohkan:

<!doctype html>
<html lang="en" class="no-js">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Back To Top</title>
<style type="text/css">
/* Back to top button */
.cd-top {
display: inline-block;
height: 40px;
width: 40px;
position: fixed;
bottom: 40px;
right: 10px;
box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
/* image replacement properties */
overflow: hidden;
text-indent: 100%;
white-space: nowrap;
background: rgba(232, 98, 86, 0.8) url(../images/cd-top-arrow.svg) no-repeat center 50%;
visibility: hidden;
opacity: 0;
-webkit-transition: opacity .3s 0s, visibility 0s .3s;
-moz-transition: opacity .3s 0s, visibility 0s .3s;
transition: opacity .3s 0s, visibility 0s .3s;
}
.cd-top.cd-is-visible, .cd-top.cd-fade-out, .no-touch .cd-top:hover {
-webkit-transition: opacity .3s 0s, visibility 0s 0s;
-moz-transition: opacity .3s 0s, visibility 0s 0s;
transition: opacity .3s 0s, visibility 0s 0s;
}
.cd-top.cd-is-visible {
/* the button becomes visible */
visibility: visible;
opacity: 1;
}
.cd-top.cd-fade-out {
/* if the user keeps scrolling down, the button is out of focus and becomes less visible */
opacity: .5;
}
.no-touch .cd-top:hover {
background-color: #e86256;
opacity: 1;
}
@media only screen and (min-width: 768px) {
.cd-top {
right: 20px;
bottom: 20px;
}
}
@media only screen and (min-width: 1024px) {
.cd-top {
height: 60px;
width: 60px;
right: 30px;
bottom: 30px;
}
}
</style>
</head>

<body>
...content....
<a href="#0" class="cd-top">Top</a>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>

<script type="text/javascript">
jQuery(document).ready(function ($) {
// browser window scroll (in pixels) after which the "back to top" link is shown
var offset = 300,
//browser window scroll (in pixels) after which the "back to top" link opacity is reduced
offset_opacity = 1200,
//duration of the top scrolling animation (in ms)
scroll_top_duration = 700,
//grab the "back to top" link
$back_to_top = $('.cd-top');

//hide or show the "back to top" link
$(window).scroll(function () {
($(this).scrollTop() > offset) ? $back_to_top.addClass('cd-is-visible') : $back_to_top.removeClass('cd-is-visible cd-fade-out');
if ($(this).scrollTop() > offset_opacity) {
$back_to_top.addClass('cd-fade-out');
}
});

//smooth scroll to top
$back_to_top.on('click', function (event) {
event.preventDefault();
$('body,html').animate({
scrollTop: 0,
}, scroll_top_duration
);
});
});
</script>

</body>

</html>

Sumber: codyhouse[dot]co

Sekian, terimakasih atas kunjungannya.

Salam,

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