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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery制作顶部与左侧锚点板块定位功能带动画跳转特效 - xw素材网</title>
<script src="js/jquery.min.js" type="text/javascript"></script>
<link href="css/christmas.css" rel="stylesheet" type="text/css" />
<script type="text/javascript">
jQuery(document).ready(function($) {
$(".index_nav li a").click(function(event) {
var index=this.title
var id='#'+'index_'+index
$("html,body").animate({scrollTop: $(id).offset().top}, 1000);
});
$(".taoba").click(function(event) {
var index=this.title
var id='#'+'index_'+index
$("html,body").animate({scrollTop: $(id).offset().top}, 1000);
});
function a(x,y){
l = $('#main').offset().left;
w = $('#main').width();
$('#tbox').css('left',(l + w + x) + 'px');
$('#tbox').css('bottom',y + 'px');
}//获取#tbox的div距浏览器底部和页面内容区域右侧的距离函数#main为页面的可视宽度
$(function() {
$(window).scroll(function(){
t = $(document).scrollTop();
if(t>500){
$('#tbox').show();
}else{
$('#tbox').hide();
}
if(t > 50){
$('#gotop').fadeIn('slow');
}else{
$('#gotop').fadeOut('slow');
}
})
a(10,100);//#tbox的div距浏览器底部和页面内容区域右侧的距离
$('#gotop').click(function(){
$('body,html').animate({
scrollTop: 0
},
800);//点击回到顶部按钮，缓懂回到顶部,数字越小越快
return false;
})
});
});
</script>
</head>
<body>
<div class="indexnav_wrap">
<ul class="index_nav">
<li><a href="javascript:void(0)" title="1"><i>活动</i><strong>1</strong></a></li>
<li><a href="javascript:void(0)" title="2"><i>活动</i><strong>2</strong></a></li>
<li><a href="javascript:void(0)" title="3"><i>活动</i><strong>3</strong></a></li>
<li><a href="javascript:void(0)" title="4"><i>活动</i><strong>4</strong></a></li>
<li><a href="javascript:void(0)" title="5"><i>活动</i><strong>5</strong></a></li>
</ul>
</div>
<div class="h50"></div>
<div class="row" id="main">
<h2 id="index_1">这是第一个活动页</h2>
<div class="mainpage mainpage1">
</div>
</div>
<div class="h15"></div>
<div class="row">
<h2 id="index_2">这是第二个活动页</h2>
<div class="mainpage mainpage2">
</div>
</div>
<div class="h15"></div>
<div class="row">
<h2 id="index_3">这是第三个活动页</h2>
<div class="mainpage mainpage3">
</div>
</div>
<div class="h15"></div>
<div class="row">
<h2 id="index_4">这是第四个活动页</h2>
<div class="mainpage mainpage4">
</div>
</div>
<div class="h15"></div>
<div class="row">
<h2 id="index_5">这是第五个活动页</h2>
<div class="mainpage mainpage5">
</div>
</div>
<div id="tbox"><!-- 这个必须有 id="tbox"-->
<a class="taoba" href="javascript:void(0)" title="1">1</a>
<a class="taoba" href="javascript:void(0)" title="2">2</a>
<a class="taoba" href="javascript:void(0)" title="3">3</a>
<a class="taoba" href="javascript:void(0)" title="4">4</a>
<a class="taoba" href="javascript:void(0)" title="5">5</a>
<a id="gotop" href="javascript:void(0)" title="回到顶部">回到顶部</a> <!-- 这个也是id="gotop" -->
</div>
</body>
</html>
来源：https://www.cnblogs.com/firstdream/p/7424801.html