js实现的鼠标滚轮滚动切换页面效果(类似360默认页面滚动切换效果)
发布于 2017-06-22 02:36:04 | 137 次阅读 | 评论: 0 | 来源: 网友投递
这里有新鲜出炉的Javascript教程，程序狗速度看过来！
JavaScript客户端脚本语言
Javascript 是一种由Netscape的LiveScript发展而来的原型化继承的基于对象的动态类型的区分大小写的客户端脚本语言，主要目的是为了解决服务器端语言，比如Perl，遗留的速度问题，为客户提供更流畅的浏览效果。
这篇文章主要介绍了js实现的鼠标滚轮滚动切换页面效果,类似360默认页面滚动切换效果.涉及JavaScript响应鼠标事件动态变换页面元素的相关技巧,需要的朋友可以参考下
本文实例讲述了js实现的鼠标滚轮滚动切换页面效果的方法。分享给大家供大家参考，具体如下：
运行效果截图如下：
具体代码如下：
<!DOCTYPE html>
<html>
<head>
<title>wheel</title>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
<script type="text/javascript" >
var currentShowPageIndex = 0;
var animateTimeout = null;
var isWheelAnimating = false;
var isWheelUp = function(event) {
event = event || window.event;
var up = true;
if(event.wheelDelta){//IE/Opera/Chrome
up = event.wheelDelta / 120 == 1 ? true : false;
}else{//Firefox
up = event.detail / 3 == 1 ? true : false;
}
return up;
}
var changeBar = function(prevIndex, index) {
var barUl = document.getElementById('barUl');
var barLiList = barUl.getElementsByTagName('li');
barLiList[prevIndex].className = "";
barLiList[index].className = "active";
}
var changePage = function(pageIndex) {
var showPageUl = document.getElementById('wheelUl');
changeBar(currentShowPageIndex, pageIndex);
currentShowPageIndex = pageIndex;
var left = -(currentShowPageIndex) * 1000;
showPageUl.style.marginLeft = left + "px";
return;
}
var animate = function(obj, mode, from, to){
if(animateTimeout) {
clearTimeout(animateTimeout);
}
if(mode == "left") {
if(from > to) {
from = from - 50;
obj.style.marginLeft = (from) + "px";
setTimeout(function(){
animate(obj, mode, from, to);
}, 30);
} else {
isWheelAnimating = false;
}
return;
}
if(from < to) {
from = from + 50;
obj.style.marginLeft = (from) + "px";
setTimeout(function(){
animate(obj, mode, from, to);
}, 30);
} else {
isWheelAnimating = false;
}
}
var mouseWheel = function(event) {
if(isWheelAnimating) {
return;
}
isWheelAnimating = true;
var wheelUp = isWheelUp(event);
var showPageUl = document.getElementById('wheelUl');
var showPageUlWidth = parseInt(showPageUl.offsetWidth);
var showPageLiList = showPageUl.getElementsByTagName('li');
var showPageLiListLength = showPageLiList.length;
var wheelWrapperLeft = parseInt(document.getElementById('wheelWrapper').offsetLeft);
if(wheelUp && currentShowPageIndex < showPageLiListLength - 1) {
changeBar(currentShowPageIndex, currentShowPageIndex + 1);
currentShowPageIndex ++;
var left = -(currentShowPageIndex) * 1000;
//animate(showPageUl, "right", -(currentShowPageIndex - 1) * 1000, -(currentShowPageIndex - 1) * 1000);
var from = -(currentShowPageIndex - 1) * 1000;
var to = -(currentShowPageIndex) * 1000;
animate(showPageUl, "left", from, to);
return;
}
if(!wheelUp && currentShowPageIndex > 0) {
changeBar(currentShowPageIndex, currentShowPageIndex - 1);
currentShowPageIndex --;
var from = -(currentShowPageIndex + 1) * 1000;
var to = -(currentShowPageIndex) * 1000;
animate(showPageUl, "right", from, to);
return;
}
isWheelAnimating = false;
};
if(document.addEventListener){
document.addEventListener('DOMMouseScroll',function(event) { mouseWheel(event); },false);
}
document.onmousewheel = function(event) { mouseWheel(event); }
window.onload = function(){
var barUl = document.getElementById('barUl');
var barLiList = barUl.getElementsByTagName('li');
for(var i=0,length=barLiList.length; i<length; i++) {
(function(index){
barLiList[index].onclick = function(){
changePage(index);
};
})(i);
}
}
</script>
<style type="text/css" >
body { background:#494949; margin:0; }
ul { list-style:none; margin:0; padding:0; }
li { float:left;}
#wheelWrapper {
width:1000px; height:550px; margin:0 auto;
position:fixed; left:50%; margin-left:-505px;
bottom:50px; overflow:hidden;
}
#wheelUl {
width:5050px; height:500px;
}
#barUl {
clear:both; margin:0 auto; width:550px;
margin-top:20px; line-height:25px;
}
#barUl>li {
width:100px; background:orange;
height:25px; margin-right:10px;
border-radius:5px; text-align:center;
-webkit-border-radius:5px;
-moz-border-radius:5px;
}
#barUl>li:hover {
background:#C36C12;
}
#barUl>li[class=active] {
background:#C36C12;
}
#wheelUl>li { width:1000px; }
.wheel {
width:994px; height:500px; background:#FAAA3C;
border-radius:10px;
-webkit-border-radius:10px;
-moz-border-radius:10px;
margin:0 auto;
line-height:300px;
font-size:100px;
text-align:center;
}
.radius {
border-radius:3px;
-webkit-border-radius:3px;
-moz-border-radius:3px;
}
h1 { text-align:center; color:#fff; }
</style>
</head>
<body id="body">
<h1 >ie8+,chrome,ff提供支持</h1>
<div id="wrapper">
<div id="wheelWrapper">
<ul id="wheelUl" >
<li >
<div class="wheel">
1_page1
</div>
</li>
<li >
<div class="wheel">
2_page2
</div>
</li>
<li >
<div class="wheel">
3_page3
</div>
</li>
<li >
<div class="wheel">
4_page4
</div>
</li>
<li >
<div class="wheel">
5_page5
</div>
</li>
</ul>
<ul id="barUl">
<li class="active">
1
</li>
<li>
2
</li>
<li>
3
</li>
<li>
4
</li>
<li>
5
</li>
</ul>
</div>
</div>
</body>
</html>
希望本文所述对大家jQuery程序设计有所帮助。
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