<!DOCTYPE html><html><head> <meta charset="utf-8"> <title></title> <meta name="viewport" content="width=device-width,initial-scale=1"> <script type="text/javascript"> window.onload=function() { var navbar = document.getElementById('navbar'); var navbarLi = navbar.getElementsByTagName('li'); var content = document.getElementById('content'); var contentDiv = content.getElementsByTagName("div"); for(var i=0;i<navbarLi.length;i++){ navbarLi[i].i=i; navbarLi[i].onclick=function(){ scroll(contentDiv[this.i]); } } function scroll(obj){ var timer=null; clearInterval(timer); timer=setInterval(function(){ if(document.body.scrollTop<obj.offsetTop-380){ document.body.scrollTop+=10; } if(document.body.scrollTop>obj.offsetTop-380){ document.body.scrollTop-=10; } },1); } }; </script> <style type="text/css"> *{ margin: 0; padding: 0; } header{ width: 100%; height: 300px; position: fixed; top: 0; } header div{ width: 100%; height: 300px; background-color: pink; margin: 0 auto; } nav{ width: 100%; height: 50px; position: fixed; top: 300px; } ul{ width: 100%; height: 50px; background-color: gray; margin: 0 auto; list-style: none; } ul li{ width: 23%; height: 50px; float: left; text-align: center; line-height: 50px; margin: 0 1% 0; background-color: black; color: white; } ul li:hover{ cursor: pointer; } #content{ width: 100%; margin: 380px auto 0; } #content div{ width: 100%; height: 500px; background-color: pink; margin-bottom: 30px; }</style></head><body> <header> <div> </div> </header> <nav> <ul id="navbar"> <li>111111111111</li> <li>222222222222</li> <li>333333333333</li> <li>444444444444</li> </ul> </nav> <div id="content"> <div>1111111111111111</div> <div>2222222222222222</div> <div>3333333333333333</div> <div>4444444444444444</div> </div></body></html>
1 回答
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柠檬酸钠
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<meta name="viewport" content="width=device-width,initial-scale=1">
<script type="text/javascript">
window.onload=function() {
var navbar = document.getElementById('navbar');
var navbarLi = navbar.getElementsByTagName('li');
var content = document.getElementById('content');
var contentDiv = content.getElementsByTagName("div");
for(var i=0;i<navbarLi.length;i++){
navbarLi[i].i = i;
navbarLi[i].onclick = function(){
scroll(contentDiv[this.i]);
};
}
function scroll(obj){
var timer = null;
clearInterval(timer);
timer = setInterval(function(){
if(document.body.scrollTop < obj.offsetTop-380){
document.body.scrollTop += 10;
} else if(document.body.scrollTop > obj.offsetTop-380){
document.body.scrollTop -= 10;
} else {
clearInterval(timer);
}
},1);
}
};
</script>
<style type="text/css">
*{
margin: 0;
padding: 0;
}
header{
width: 100%;
height: 300px;
position: fixed;
top: 0;
}
header div{
width: 100%;
height: 300px;
background-color: pink;
margin: 0 auto;
}
nav{
width: 100%;
height: 50px;
position: fixed;
top: 300px;
}
ul{
width: 100%;
height: 50px;
background-color: gray;
margin: 0 auto;
list-style: none;
}
ul li{
width: 23%;
height: 50px;
float: left;
text-align: center;
line-height: 50px;
margin: 0 1% 0;
background-color: black;
color: white;
}
ul li:hover{
cursor: pointer;
}
#content{
width: 100%;
margin: 380px auto 0;
}
#content div{
width: 100%;
height: 500px;
background-color: pink;
margin-bottom: 30px;
}
</style>
</head>
<body>
<header>
<div>
</div>
</header>
<nav>
<ul id="navbar">
<li>111111111111</li>
<li>222222222222</li>
<li>333333333333</li>
<li>444444444444</li>
</ul>
</nav>
<div id="content">
<div>1111111111111111</div>
<div>2222222222222222</div>
<div>3333333333333333</div>
<div>4444444444444444</div>
</div>
</body>
</html>
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