<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=, initial-scale=1.0">
<link rel="stylesheet" href="css.css">
<title>Document</title>
</head>
<body>
<div class="nav-bar" id="fixed">
<div class="container">
<h2 class="proj-name">2號</h2>
<div class="right">
<a href="" class="cur">概述</a>
<span class="separator">|</span>
<a href="">參數</a>
<span class="separator">|</span>
<a href="">圖集</a>
<span class="separator">|</span>
<a href="">F碼通道</a>
<span class="separator">|</span>
<a href="">用戶評價</a>
<a href="" class="buy-now">立即購買</a>
</div>
</div>
</div>
<div class="nav-bar" id="static">
<div class="container">
<h2 class="proj-name">1號</h2>
<div class="right">
<a href="" class="cur">概述</a>
<span class="separator">|</span>
<a href="">參數</a>
<span class="separator">|</span>
<a href="">圖集</a>
<span class="separator">|</span>
<a href="">F碼通道</a>
<span class="separator">|</span>
<a href="">用戶評價</a>
<a href="" class="buy-now">立即購買</a>
</div>
</div>
</div>
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<script>
var fixedbar = document.getElementById('fixed');
var staticbar = document.getElementById('static');
var y = staticbar.offsetHeight + staticbar.offsetTop;
var show = function()
{
fixedbar.classList.add('active');
}
var hidd = function()
{
fixedbar.classList.remove('active');
}
var position = 0;
var timer = window.setInterval(function()
{
position += 1;
if(position <= staticbar.offsetTop)
{
window.scrollTo(0, position);
}
else
{
clearInterval();
}
}, 1);
window.addEventListener('scroll', function()
{
if(window.scrollY > y)
{
show();
}
else
{
hidd();
}
})
</script>
</body>
</html>
css
*
{
margin: 0px;
padding: 0px;
}
body
{
color: #212121;
}
.nav-bar
{
margin-top: 140px;
width: 100%;
background-color: white;
height: 63px;
border: solid 1px rgba(224,224,224);
border-left: 0px;
border-right: 0px;
}
.nav-bar .container
{
width: 1226px;
height: 60px;
background-color: white;
margin: 0px auto;
}
.nav-bar .container .proj-name
{
display: inline-block;
height: 60px;
line-height: 60px;
font-size: 18px;
font-weight: 400;
}
.nav-bar .container .right
{
display: inline-block;
float: right;
height: 30px;
margin-top: 17px;
}
.nav-bar .container .right .separator
{
color: #e0e0e0;
font-size: 14px;
margin: 0px 3.5px;
line-height: 21px;
}
.nav-bar .container .right a:not(.buy-now)
{
color: #616161;
font-size: 14px;
line-height: 21px;
text-decoration: none;
}
.nav-bar .container .right a:hover
{
color: #ff6700;
}
.nav-bar .container .right .cur
{
color: #ff6700 !important;
}
.nav-bar .container .right .buy-now
{
width: 118px;
height: 28px;
display: inline-block;
border: solid 1px rgba(255,103,0);
background-color: rgba(255,103,0);
color: white;
text-align: center;
line-height: 28px;
text-decoration: none;
font-size: 12px;
margin-left: 5px;
transition: all .3s;
}
.nav-bar .container .right .buy-now:hover
{
background-color: #f25807;
border-color: #f25807;
color: white;
}
#fixed
{
margin: 0px;
position: fixed;
top: -64px;
transition: all .3s linear;
}
#fixed.active
{
top: 0px;
}
