CSS:
.goTop{
position: absolute;
bottom: -50px;
right: 15px;
color: #fff;
z-index: 99;
width: 50px;
height: 50px;
border-radius: 50%;
background: rgba(34,34,34,0.8);
text-align: center;
-webkit-transition: all .6s;
transition: all .6s;
}
.goTop .icon-arrowstopfloat{
position: relative;
top: 8px;
display: block;
}
.goTop .TOP {
display: block;
line-height: 22px;
}
.goTop.on{
bottom: 70px;
}
HTML:
<div class="goTop" tapmode onclick="goTop()">
<span class="iconfont icon-arrowstopfloat fs14"></span>
<span class="TOP fs17">TOP</span>
</div>
JS:
要先引入插件
<script type="text/javascript" src="../../script/iscroll-probe.min.js"></script>
function goTop(){
IScroll.scrollTo(0, 0, 300)
}