页面右下角返回顶部
html
<div class="sriLink">
<div class="back_top" onclick="window.scrollTo(0,0);return false" style="display: none;">
<a href="javascript:void(0);"></a>
</div>
<div class="go_aboutUs">
<a href="/aboutus" target="_blank">关于<br>我们</a>
</div>
<div class="go_feedBack">
<a href="javascript:void(0);" target="_blank">意见<br>反馈</a>
</div>
</div>
css
.sriLink{
position: fixed;
right: 50%;
margin-right: -665px;
bottom: 90px;
z-index: 100;
}
.sriLink a{
display: block;
width: 50px;
height: 50px;
background: #eceded;
text-align: center;
padding-top: 8px;
color: white;
border-radius: 3px;
margin-top: 5px;
line-height: 16px;
}
.sriLink .back_top a {
background: #e4e4e4 url(../image/back_top.png) no-repeat center;
}
js
/*滚动事件*/
window.addEventListener('scroll',function(e){
var t = document.documentElement.scrollTop || document.body.scrollTop;
if(t > 400 ){
$('.back_top').show();
}else{
$('.back_top').hide();
}
})
/*全局页面中间内容高度*/
$().ready(function(){
var Height = $(window).height();
var h = (Height - 212)+'px' //头部和底部总高为212
$('.sriContainer').css('min-height',h);
})