The article comes from https://www.liaoxuefeng.com/article/0013738939371174a66d9fcf5094b1dbf28e9e9ccbf9d61000
back to top code
<body>
<div class="go-top">
<div class="arrow"></div>
<div class="stick"></div>
</div>
...
</body>
css style
div.go-top {
display: none;
opacity: 0.6;
z-index: 999999;
position: fixed;
bottom: 113px;
left: 90%;
margin-left: 40px;
border: 1px solid #a38a54;
width: 38px;
height: 38px;
background-color: #eddec2;
border-radius: 3px;
cursor: pointer;
}
div.go-top:hover {
opacity: 1;
filter: alpha(opacity=100);
}
div.go-top div.arrow {
position: absolute;
left: 10px;
top: -1px;
width: 0;
height: 0;
border: 9px solid transparent;
border-bottom-color: #cc3333;
}
div.go-top div.stick {
position: absolute;
left: 15px;
top: 15px;
width: 8px;
height: 14px;
display: block;
background-color: #cc3333;
-webkit-border-radius: 1px;
-moz-border-radius: 1px;
border-radius: 1px;
}
Use fixed positioning so that the button always appears in the lower right corner, and by setting left:90%, the button can appear on the right, but not too close to the scroll bar.
The button is invisible by default. When the page is scrolled to a certain height, the button appears. Here is implemented with jQuery. The code is quite simple:
$(function() {
$(window).scroll(function() {
if ($(window).scrollTop() > 1000)
$('div.go-top').show();
else
$('div.go-top').hide();
});
$('div.go-top').click(function() {
$('html, body').animate({scrollTop: 0}, 1000);
});
});
Modified renderings
