日期:2014-05-16 浏览次数:20389 次
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>淘宝首页图片轮播效果</title> <style> <!-- * {margin: 0;padding:0;} body {background: #222;} ol {list-style: none;} img {border: 0 none;} #slider { border: 1px solid #F60; width: 490px; height: 170px; overflow: hidden; position: relative; margin: 2em auto; } #slider .player { /*width: 2450px; height: 850px;*/ position: absolute; top: 0px; left: 0px; } #slider .player li { width: 490px; height: 170px; } #slider .btns { position: absolute; right: 10px; bottom: 5px; height: 30px; } #slider .btns li { font: 13px Tahoma, Arial, 宋体, sans-serif; float: left; margin: 0 3px; border: 1px solid #F60; background-color: #FFF; color: #CC937A; opacity: .8; cursor: pointer; width: 20px; height: 20px; line-height: 19px; text-align: center; -moz-border-radius: 10px; -webkit-border-radius: 10px; border-radius: 10px; } #slider .btns li.active { background: #F60; color: #FFF; font-weight: bold; opacity: 1; } --> </style> <script> //<![CDATA[ function $(id) { return document.getElementById(id); }; function getByClass(className, context) { /* * 功能说明: * 传入类名、节点名(默认document),获取context下类名为classNa的节点 */ context = context || document; if(context.getElementsByClassName) { return context.getElementsByClassName(className); } else { var nodes = []; var tags = context.getElementsByTagName('*'); for(var i=0, len=tags.length; i<len; i++) { if(hasClass(tags[i], className)) { nodes.push(tags[i]); } } return nodes; } } function hasClass(node, className) { /* * 功能说明: * 传入节点及一个类名,检查该节点是否含有传入的类名 */ var names = node.className.split(/\s+/); for(var i=0, len=names.length; i<len; i++) { if(names[i] == className) { return true; } } return false; } function animate(o,start,alter,dur,fx) { /* * 功能说明: * 设置动画 * o:要设置动画的对象 * start:开始的对象 * alter:总的对象 * dur:动画持续多长时间 * fx:动画类型 */ var curTime=0; var t=setInterval(function () { if (curTime>=dur) clearInterval(t); for (var i in start) { o.style[i]=fx(start[i],alter[i],curTime,dur)+"px"; } curTime+=40; },40); return function () { clearInterval(t); }; } var Tween = { /* * 功能说明: * 加速运动 * curTime:当前时间,即动画已经进行了多长时间,开始时间为0 * start:开始值 * alter:总的变化量 * dur:动画持续多长时间 */ Linear:function (start,alter,curTime,dur) {return start+curTime/dur*alter;},//最简单的线性变化,即匀速运动 Quad:{//二次方缓动 easeIn:function (start,alter,curTime,dur) { return start+Math.pow(curTime/dur,2)*alter; }, easeOut:function (start,alter,curTime,dur) { var progress =curTime/dur; return start-(Math.pow(progress,2)-2*progress)*alter; }, easeInOut:function (start,alter,curTime,dur) { var progress =curTime/dur*2; return (progress<1?Math.pow(progress,2):-((--progress)*(progress-2) - 1))*alter/2+start; } }, }; function Player(btns, scrollContent, imgHeight, timeout, hoverClass) { /* * btns:按钮,类型是数组 * scrollContent:摇滚动的块,一个DOM对象,这里是ol * imgHeight:每一张图片的高度,当然,如果想改成左右滚动,这里传入每一张图片的宽,唯一需要注意的是每一张图片宽高必须相同,图片数量可调整 * timeout:切换速度快慢,默认为1.5ms * hoverClass:每一个按钮激活时的类名 */ hoverClass = hoverClass || 'active'; timeout = timeout || 1500; this.btns = btns; this.scrollContent = scrollContent; this.hoverClass = hoverClass; this.timeout = timeout; this.imgHeight = imgHeight; var _this = this; for(var i=0; i<btns.length; i++) { this.btns[i].index = i; btns[i].onmouseover = function() { _this.stop(); _this.invoke(this.index); } btns[i].onmouseout = function() { _this.start(); } } this.invoke(0); } Player.prototype = { constructor : Player, start : function() { var _this = this; this.stop()