<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<script src="jquery.js"></script>
<style>
*{
padding: 0;
margin: 0;
list-style: none;
}
.header{
width: 100Vw;
height: 50px;
background: gray;
}
.con{
width: 100vw;
overflow: hidden;
position: relative;
margin: 20px 0 0 0;
}
.left{
width: 15%;
top: 0;
left: 50px;
border-left: 1px solid #E0E6ED;
border-top: 1px solid #E0E6ED;
}
.positionAbs{
position: absolute;
}
.left p{
width: 100%;
height: 48px;
background: #FFF;
border-bottom: 1px solid #E0E6ED;
border-right: 1px solid #E0E6ED;
font-size: 16px;
color: #333333;
letter-spacing: 1px;
line-height: 48px;
text-align: center;
cursor: pointer;
}
.left p.check{
background: #04388B;
color: #FFFFFF;
}
.right{
float: right;
width: 70%;
}
.rightCon{
width: 100%;
height: 200px;
background: pink;
color:#fff;
font-size: 30px;
line-height: 200px;
text-align: center;
margin: 0 0 20px 0;
}
.bottom{
width: 100vw;
height: 260px;
background: #ccc;
text-align: center;
font-size: 30px;
line-height: 260px;
}
.postionFixed{
position: fixed;
}
</style>
<title>Document</title>
</head>
<body>
<div class="header">
</div>
<div class="con">
<div class="left positionAbs">
<p class="check">第一个</p>
<p>第二个</p>
<p>第三个</p>
<p>第四个</p>
<p>第五个</p>
</div>
<div class="right">
<div class="rightCon">
这是第一个对应的内容
</div>
<div class="rightCon">
这是第二个对应的内容
</div>
<div class="rightCon">
这是第三个对应的内容
</div>
<div class="rightCon">
这是第四个对应的内容
</div>
<div class="rightCon">
这是第五个对应的内容
</div>
</div>
</div>
<div class="bottom">
底部
</div>
<script>
//点击左侧导航条跳转到对应到块
$('.left p').click(function(){
var i = $('.left p').index(this);
$(this).addClass('check').siblings().removeClass('check');
var h = $('.rightCon').eq(i).offset().top;
$(window).scrollTop(h);
})
//鼠标滚动的时候自动定位到哪个导航条下
$(window).scroll(function(){
var top = $(window).scrollTop();
var height = $(document).height();
if (top<70) {
$('.left').removeClass('postionFixed').addClass('positionAbs');
}else if(top < height-500){
$('.left').removeClass('positionAbs').addClass('postionFixed');
for (var i = 0; i < $('.rightCon').length; i++) {
console.log('i',i, $('.rightCon').eq(i).offset().top,top);
if (top >= $('.rightCon').eq(i).offset().top) {
$('.left p').eq(i).addClass('check').siblings().removeClass('check');
}
}
}else{
$('.left').removeClass('postionFixed').addClass('positionAbs');
}
})
</script>
</body>
</html>
