js實現的滑鼠滾輪滾動切換頁面效果(類似360預設頁面滾動切換效果)_javascript技巧
- WBOY原創
- 2016-05-16 15:17:391953瀏覽
本文實例講述了js實現的滑鼠滾輪滾動切換頁面效果的方法。分享給大家參考，具體如下：
運作效果截圖如下：
具體程式碼如下：
<!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>
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》>
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