jQuery效果的制作还是相对与JS来所容易简便得多，今天分享的制作的一个jQuery效果是图片 自动向上翻页的一个特效，这特效对于商城来说还是比较常见的下面是代码：
<!DOCTYPE html>
<html>
<head>
<title>upDown1</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type" />
<style type="text/css">
* { margin:0; padding:0;}
ul, li { list-style:none;}
body{
text-align:center;
}
.play{
width:400px;
height:80px;
position:relative;
overflow:hidden;
background:#DDD;
margin:10px 0;
}
.playimg{
width:400px;
height:80px;
background:red;
position:absolute;
}
.playimg li{
height:80px;
background:green;
margin:5px 0;
overflow:hidden;
}
.playimg img{
width:80px;
height:80px;
}
</style>
</head>
<body>
<script type="text/javascript">
function $(id){return document.getElementsByClassName(id)}
function moveElement(elementID,n,final_x,final_y,interval) {
if (!document.getElementsByClassName) return false;
if (!document.getElementsByClassName(elementID)) return false;
var elem = document.getElementsByClassName(elementID)[n];
if (elem.movement) {
clearTimeout(elem.movement);
}
if (!elem.style.left) {
elem.style.left = "0px";
}
if (!elem.style.top) {
elem.style.top = "0px";
}
var xpos = parseInt(elem.style.left);
var ypos = parseInt(elem.style.top);
if (xpos == final_x && ypos == final_y) {
return true;
}
if (xpos < final_x) {
var dist = Math.ceil((final_x - xpos)/10);
xpos = xpos + dist;
}
if (xpos > final_x) {
var dist = Math.ceil((xpos - final_x)/10);
xpos = xpos - dist;
}
if (ypos < final_y) {
var dist = Math.ceil((final_y - ypos)/10);
//ypos = dist + ypos; //往下切换回第一张
ypos = dist - ypos; //往上切换回第一张
}
if (ypos > final_y) {
var dist = Math.ceil((ypos - final_y)/10);
ypos = ypos - dist;
}
elem.style.left = xpos + "px";
elem.style.top = ypos + "px";
var repeat = "moveElement(‘"+elementID+"‘,"+n+","+final_x+","+final_y+","+interval+")";
elem.movement = setTimeout(repeat,interval);
}
function imgChange(num,n){//切换内容
if(!$(‘play‘)) return false;
var piclist=$(‘playimg‘)[n].getElementsByTagName(‘img‘);
var imgheight=piclist[0].offsetHeight;
var moveY=-(imgheight*num);
moveElement(‘playimg‘,n,0,moveY,5);
}
function classToggle(arr,n){//切换当前样式Class
for(var i=0;i<arr.length;i++){
arr[i].className=‘‘;
}
arr[n].className=‘current‘;
}
function autoChange(btns){
if(!$(btns)) return false;
if(!autokey) return false;
for(var j=0;j<$(btns).length;j++){
var arr=$(btns)[j].getElementsByTagName(‘li‘);
for(var i=0;i<arr.length;i++){
if(arr[i].className==‘current‘){
var n=i+1;
}
}
if(n>=arr.length) n=0;
classToggle(arr,n);
imgChange(n,j);
}
}
var autokey = true;
setInterval("autoChange(‘playimg‘)",3000);
</script>
<div class="play">
<ul class="playimg">
<li class="current"><img alt="" src="./public/img/1.jpg" />11111111</li>
<li><img alt="" src="./public/img/1.jpg" />222222222</li>
</ul>
</div>
<div class="play">
<ul class="playimg">
<li class="current"><img alt="" src="./public/img/1.jpg" />11111111</li>
<li><img alt="" src="./public/img/1.jpg" />222222222</li>
<li><img alt="" src="./public/img/2.jpg" />333333333</li>
</ul>
</div>
<div class="play">
<ul class="playimg">
<li class="current"><img alt="" src="./public/img/1.jpg" />11111111</li>
<li><img alt="" src="./public/img/1.jpg" />222222222</li>
<li><img alt="" src="./public/img/1.jpg" />333333333</li>
<li><img alt="" src="./public/img/1.jpg" />444444444</li>
</ul>
</div>
</body>
</html>
时间： 2024-10-27 06:25:40