Created
December 10, 2020 10:51
-
-
Save dinhanhthi/20daf8dda279685fd1a65f81491177d0 to your computer and use it in GitHub Desktop.
Back to top button
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
.cd-top { | |
display: inline-block; | |
height: 50px; | |
width: 50px; | |
position: fixed; | |
bottom: 2%; | |
right: 2%; | |
border-radius: 40px; | |
box-shadow: 0 0 10px rgba(0, 0, 0, 0.05); | |
/* image replacement properties */ | |
overflow: hidden; | |
text-indent: 100%; | |
white-space: nowrap; | |
background: #bbb 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; | |
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<!-- using jquery --> | |
<script src="https://code.jquery.com/jquery-1.11.0.min.js" integrity="sha256-spTpc4lvj4dOkKjrGokIrHkJgNA0xMS98Pw9N7ir9oI=" crossorigin="anonymous"></script> | |
<!-- where back-to-top button locates --> | |
<a href="#0" class="cd-top">Top</a> |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
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'); | |
}); | |
//smooth scroll to top | |
$back_to_top.on('click', function(event){ | |
event.preventDefault(); | |
$('body,html').animate({ | |
scrollTop: 0 , | |
}, scroll_top_duration | |
); | |
}); | |
}); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment