幻灯片(jquery实现)
html代码:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>幻灯片特效 在线演示 DIVCSS5</title> <style type="text/css"> body {font-size:12px; color:#222; text-align:center; font-family:Verdana,Arial,Helvetica,sans-serif; background:#f0f0f0;} ul,li {list-style:none; margin:0px; padding:0px;} img {border:0;} /* 以下特效CSS */ .focus {width:600px; height:280px; margin:0 auto; overflow:hidden; position:relative;} .focus ul {height:280px; position:absolute;} .focus ul li {float:left; width:600px; height:280px; overflow:hidden; position:relative; background:#000;} .focus ul li div {position:absolute; overflow:hidden;} .focus .btnBg {position:absolute; width:600px; height:20px; left:0; bottom:0; background:#000; display:none;} .focus .btn {position:absolute; width:580px; height:23px; padding:0px 10px 0px 10px; right:0; bottom:6px; text-align:right;} .focus .btn span {display:inline-block; _display:inline; _zoom:1; width:25px; height:24px; line-height:24px; text-align:center; _font-size:0; margin-left:5px; cursor:pointer; background:#fff;} .focus .btn span.on {background:#fff;} .focus .preNext {width:45px; height:100px; position:absolute; top:90px; background:url(/Images/sprite.png) no-repeat 0 0; cursor:pointer;} .focus .pre {left:0;} .focus .next {right:0; background-position:right top;} </style> <script type="text/javascript" src="/Javascript/jquery.js"></script> <script type="text/javascript" src="/Javascript/9.js"></script> <script type="text/javascript"> $(document).ready(function(){ $.focus("#focus001"); }); </script> </head> <body> <div class="focus" id="focus001"> <ul> <li><a href="http://www.divcss5.com/" target="_blank"><img src="/Images/01.jpg" alt="jquery特效" /></a></li> <li><a href="http://www.divcss5.com/" target="_blank"><img src="/Images/02.jpg" alt="DIVCSS5" /></a></li> <li><a href="http://www.divcss5.com/css-texiao/texiao735.shtml" target="_blank"><img src="/Images/03.jpg" alt="点击左右滚动jquery焦点图特效" /></a></li> </ul> </div> </body> </html>
javascript代码:
$(function() { jQuery.focus = function(slid) { var sWidth = $(slid).width(); //获取焦点图的宽度(显示面积) var len = $(slid).find("ul li").length; //获取焦点图个数 var index = 0; var picTimer; //以下代码添加数字按钮和按钮后的半透明条,还有上一页、下一页两个按钮 var btn = "<div class=‘btnBg‘></div><div class=‘btn‘>"; for(var i=0; i < len; i++) { var ii = i+1; btn += "<span>"+ii+"</span>"; } btn += "</div><div class=‘preNext pre‘></div><div class=‘preNext next‘></div>"; $(slid).append(btn); $(slid).find("div.btnBg").css("opacity",0.5); //为小按钮添加鼠标滑入事件,以显示相应的内容 $(slid+" div.btn span").css("opacity",0.4).mouseenter(function() { index = $(slid+" .btn span").index(this); showPics(index); }).eq(0).trigger("mouseenter"); //上一页、下一页按钮透明度处理 $(slid+" .preNext").css("opacity",0.2).hover(function() { $(this).stop(true,false).animate({"opacity":"0.5"},300); },function() { $(this).stop(true,false).animate({"opacity":"0.2"},300); }); //上一页按钮 $(slid+" .pre").click(function() { index -= 1; if(index == -1) {index = len - 1;} showPics(index); }); //下一页按钮 $(slid+" .next").click(function() { index += 1; if(index == len) {index = 0;} showPics(index); }); //本例为左右滚动,即所有li元素都是在同一排向左浮动,所以这里需要计算出外围ul元素的宽度 $(slid+" ul").css("width",sWidth * (len)); //鼠标滑上焦点图时停止自动播放,滑出时开始自动播放 $(slid).hover(function() { clearInterval(picTimer); },function() { picTimer = setInterval(function() { showPics(index); index++; if(index == len) {index = 0;} },2000); //此4000代表自动播放的间隔,单位:毫秒 }).trigger("mouseleave"); //显示图片函数,根据接收的index值显示相应的内容 function showPics(index) { //普通切换 var nowLeft = -index*sWidth; //根据index值计算ul元素的left值 $(slid+" ul").stop(true,false).animate({"left":nowLeft},300); //通过animate()调整ul元素滚动到计算出的position $(slid+" .btn span").removeClass("on").eq(index).addClass("on"); //为当前的按钮切换到选中的效果 $(slid+" .btn span").stop(true,false).animate({"opacity":"0.4"},300).eq(index).stop(true,false).animate({"opacity":"1"},300); //为当前的按钮切换到选中的效果 } }; });
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