javascript实现图片轮换动作方法
图片轮换是一种相当复杂的技术,早些年基本用flash实现。这里有一个,教大家如何用flash实现它的。之所以用flash,是因为flash是基于帧的,这与图片轮换的原理相当接近。为了模拟帧的效果,我们要用到overflow把多余的部分遮罩掉,也就是flash中常说的遮罩层。在flash中,连时间轴都是可视的,而我们则全凭想象力与数学来计算现在是到了哪一张图。加之,flash有robert penner大神的缓动公式,那实在太耀眼,直到script.aculo.us类库搞出自己的缓动公式,才扭转局面。
我们来看一看图片轮换的结构层。它应该包含框体,图片展示区,图片滑动层与分页栏。原谅我制造这么多词汇,因为没有个名词讲解就难以为继了,前人也没有做这样的总结,个个都不愿意分享一下。框体就是一个div元素,作用有两个:提供相册的边框与作为分页栏的包含块。如果不清楚什么叫包含块(containing block)的话,自己查阅css权威指南吧。接着下来图片展示区与图片滑动层,也就是我实现的那一种结构,一个很干净的无序列表,所有难点都转移到设置它的css上。至于图片展示区就是ul元素,大小为一张图片的大小;图片滑动层就是那个li元素,也只有一个li元素而已,利用css强制把它里面的图片不换行向左浮动,并设置li元素一个很大很大的宽度,好让它一行容纳所有图片。分页栏就是一个包含许多链接的span元素,和普通的水平菜单差不多,只不过要用绝对定位它安置到框体的右下角。
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#album { position:relative;/*为分页栏准备的*/ width:400px;/*必须设置,为分页栏准备*/ height:300px;/*必须设置,为分页栏准备*/ border:10px solid #8080c0; } #album ul ,#album li {/*消除默认样式*/ padding:0; margin:0; list-style:none; } #album ul{ position:relative; /*为图片滑动区*/ height:300px;/*必须设置,用于隐藏图片滑动区多余的部分*/ width:400px;/*必须设置,用于隐藏图片滑动区多余的部分*/ overflow:hidden; background:transparent url(http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s001.jpg) no-repeat 0 0; } #album li { /*图片滑动区*/ position:absolute; width:1000%;/*让里面的所有图片并列显示*/ } #album a { float:left; } #album img { display:block; border:0; } #album span {/*分页栏*/ position:absolute; right:0; bottom:10px; } #album span a{ display:block;/*让其拥有盒子模型*/ margin-right:10px;/*错开格子*/ width:15px;/*呈正方形*/ height:15px; line-height:15px; text-align:center;/*居中显示*/ text-decoration:none;/*消除下划线*/ color:#808080; background:transparent url(http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_button.gif) no-repeat -15px 0; } #album span a:hover ,#album span a.hover{ color:#f8f8f8; background-position:0 0; }
<!doctype html> <title>javascript图片轮换 by 司徒正美</title> <meta charset="utf-8"/> <meta name="keywords" content="javascript图片轮换 by 司徒正美" /> <meta name="description" content="javascript图片轮换 by 司徒正美" /> <style type="text/css"> #album { position:relative;/*为分页栏准备的*/ width:400px;/*必须设置,为分页栏准备*/ height:300px;/*必须设置,为分页栏准备*/ border:10px solid #8080c0; } #album ul ,#album li {/*消除默认样式*/ padding:0; margin:0; list-style:none; } #album ul{ position:relative; /*为图片滑动区*/ height:300px;/*必须设置,用于隐藏图片滑动区多余的部分*/ width:400px;/*必须设置,用于隐藏图片滑动区多余的部分*/ overflow:hidden; background:transparent url(http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s001.jpg) no-repeat 0 0; } #album li { /*图片滑动区*/ position:absolute; width:1000%;/*让里面的所有图片并列显示*/ } #album a { float:left; } #album img { display:block; border:0; } #album span {/*分页栏*/ position:absolute; right:0; bottom:10px; } #album span a{ display:block;/*让其拥有盒子模型*/ margin-right:10px;/*错开格子*/ width:15px;/*呈正方形*/ height:15px; line-height:15px; text-align:center;/*居中显示*/ text-decoration:none;/*消除下划线*/ color:#808080; background:transparent url(http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_button.gif) no-repeat -15px 0; } #album span a:hover ,#album span a.hover{ color:#f8f8f8; background-position:0 0; } </style> <h4>javascript图片轮换 by 司徒正美</h4> <div id="album"> <ul> <li> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external 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nofollow" >3</a> <a href="#index4" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >4</a> <a href="#index5" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >5</a> <a href="#index6" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >6</a> </span> </div>
这个和我以前的系列一样,不用js也可以点击实现切换。不过以前是用锚点来改变scrolltop的值,现在是改变scrollleft的值。
如果不使用缓动效果,很简单。
var rotate = function(id){ try{document.execcommand("backgroundimagecache", false, true);}catch(e){}; var container = document.getelementbyid(id), slide = container.getelementsbytagname("li")[0]; slide.innerhtml += slide.innerhtml; var item = slide.getelementsbytagname("a"), critical = item[item.length/2].offsetleft,//临界值 distance = critical/(item.length/2), delta = - distance; (function(){//实现自动轮换图片 settimeout(function(){ delta = delta - distance; if(delta < -critical){ delta = - distance; } slide.style.left = delta + "px";//★★★★★★★★ settimeout(arguments.callee,1500) },1500) })() }
要使用缓动,就要动用我的缓动公式与transition函数,在星号的位置中调用。
<!doctype html> <title>javascript图片轮换 by 司徒正美</title> <meta charset="utf-8"/> <meta name="keywords" content="javascript图片轮换 by 司徒正美" /> <meta name="description" content="javascript图片轮换 by 司徒正美" /> <style type="text/css"> #album { position:relative; width:400px; height:300px; border:10px solid #8080c0; } #album ul,#album li { list-style:none; margin:0; padding:0; } #album ul { position:relative; height:300px; width:400px; overflow:hidden; background:transparent url(http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s001.jpg) no-repeat 0 0; } #album li { position:absolute; width:1000%; } #album a { float:left; } #album img { display:block; border:0; } #album span { position:absolute; right:0; bottom:10px; } #album span a { display:block; margin-right:10px; width:15px; height:15px; line-height:15px; text-align:center; text-decoration:none; color:gray; background:transparent url(http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_button.gif) no-repeat -15px 0; } #album span a:hover,#album span a.hover { color:#f8f8f8; background-position:0 0; } </style> <script type="text/javascript"> var spring= function(pos) { return 1 - (math.cos(pos * 4.5 * math.pi) * math.exp(-pos * 6)); } var transition = function(el){ var options = arguments[1] || {}, begin = options.begin,//开始位置 change = options.change,//变化量 duration = options.duration || 500,//缓动效果持续时间 ftp = options.ftp || 50, onend = options.onend || function(){}, ease = options.ease,//要使用的缓动公式 end = begin + change,//结束位置 starttime = new date().gettime();//开始执行的时间 (function(){ settimeout(function(){ var newtime = new date().gettime(),//当前帧开始的时间 timestamp = newtime - starttime,//逝去时间 delta = ease(timestamp / duration); el.style.left = math.ceil(begin + delta * change) + "px" if(duration <= timestamp){ el.style.left = end + "px"; onend(); }else{ settimeout(arguments.callee,1000/ftp); } },1000/ftp) })() } var rotate = function(id){ try{document.execcommand("backgroundimagecache", false, true);}catch(e){}; var container = document.getelementbyid(id), slide = container.getelementsbytagname("li")[0], paginater = container.getelementsbytagname("span")[0], links = paginater.getelementsbytagname("a"), length = links.length, abefore = length, aindex; slide.innerhtml += slide.innerhtml; var item = slide.getelementsbytagname("a"), critical = item[length].offsetleft,//临界值 distance = critical/length, delta = - distance; (function(){//实现自动轮换图片 settimeout(function(){ delta = delta - distance; if(delta < -critical){ delta = - distance; } aindex = - delta/distance; links[abefore-1].classname = ""; links[aindex-1].classname = "hover"; abefore = aindex; transition(slide,{begin:delta,change:distance,ease:spring}) settimeout(arguments.callee,1500) },1500) })() } window.onload = function(){ rotate("album"); } </script> <h4>javascript图片轮换 by 司徒正美</h4> <div id="album"> <ul> <li> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external 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nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index2"> <img alt="清澈的湖水" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s002.jpg" /> </a> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index3"> <img alt="荒漠上的植物" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s003.jpg" /> </a> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index4"> <img alt="末日霓虹" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s004.jpg" /> </a> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index5"> <img alt="绿·生意" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s005.jpg" /> </a> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index6"> <img alt="又是收获的季节" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s006.jpg" /> </a> </li> </ul> <span> <a href="#index1" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >1</a> <a href="#index2" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >2</a> <a href="#index3" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >3</a> <a href="#index4" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >4</a> <a href="#index5" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >5</a> <a href="#index6" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >6</a> </span> </div>
我们也可以像第一部分那样加入一个信息栏,这样程序就拥有三个定时器了,看起来让人有点头晕,现实中不提倡这样做,这里只是试范一下如何使用transition的回调函数罢了。
//动态生成li元素并把它插入到dom树中。 var tip = document.createelement("li");//信息栏 tip.style.csstext = "position:absolute;bottom:0;width:400px;height:40px;line-height:40px;text-indent:2em;"; slide.parentnode.appendchild(tip); if(!+"\v1"){ tip.style.csstext += "color:#369;background:#fff;filter:alpha(opacity=50)"; }else{ tip.style.csstext += "color:#fff;background: rgba(164, 173, 183, .65);"; }
<!doctype html> <title>javascript图片轮换 by 司徒正美</title> <meta charset="utf-8"/> <meta name="keywords" content="javascript图片轮换 by 司徒正美" /> <meta name="description" content="javascript图片轮换 by 司徒正美" /> <style type="text/css"> #album { position:relative; width:400px; height:300px; border:10px solid #8080c0; } #album ul,#album li { list-style:none; margin:0; padding:0; } #album ul { position:relative; height:300px; width:400px; overflow:hidden; background:transparent url(http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s001.jpg) no-repeat 0 0; } #album li { position:absolute; width:1000%; } #album a { float:left; } #album img { display:block; border:0; } #album span { position:absolute; right:0; bottom:10px; } #album span a { display:block; margin-right:10px; width:15px; height:15px; line-height:15px; text-align:center; text-decoration:none; color:gray; background:transparent url(http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_button.gif) no-repeat -15px 0; } #album span a:hover,#album span a.hover { color:#f8f8f8; background-position:0 0; } </style> <script type="text/javascript"> var easeinoutcubic= function(pos){ if ((pos/=0.5) < 1) return 0.5*math.pow(pos,3); return 0.5 * (math.pow((pos-2),3) + 2); } var transition = function(el){ var options = arguments[1] || {}, begin = options.begin,//开始位置 change = options.change,//变化量 duration = options.duration || 500,//缓动效果持续时间 ftp = options.ftp || 50, onend = options.onend || function(){}, ease = options.ease,//要使用的缓动公式 end = begin + change,//结束位置 starttime = new date().gettime();//开始执行的时间 (function(){ settimeout(function(){ var newtime = new date().gettime(),//当前帧开始的时间 timestamp = newtime - starttime,//逝去时间 delta = ease(timestamp / duration); el.style.left = math.ceil(begin + delta * change) + "px" if(duration <= timestamp){ el.style.left = end + "px"; onend(); }else{ settimeout(arguments.callee,1000/ftp); } },1000/ftp) })() } var rotate = function(id){ try{document.execcommand("backgroundimagecache", false, true);}catch(e){}; var container = document.getelementbyid(id), slide = container.getelementsbytagname("li")[0], paginater = container.getelementsbytagname("span")[0], links = paginater.getelementsbytagname("a"), images = slide.getelementsbytagname("img"), length = links.length, abefore = length, aindex; slide.innerhtml += slide.innerhtml; var tip = document.createelement("li"); tip.style.csstext = "position:absolute;bottom:-40px;height:20px;width:380px;padding:10px;color:#fff;background:#fff;"; slide.parentnode.appendchild(tip); if(!+"\v1"){ tip.style.color = "#369"; tip.style.filter = "alpha(opacity=67)" }else{ tip.style.csstext += "background: rgba(164, 173, 183, .65);" } var item = slide.getelementsbytagname("a"), critical = item[length].offsetleft,//临界值 distance = critical/length, delta = - distance; (function(){//实现自动轮换图片 settimeout(function(){ delta = delta - distance; if(delta < -critical){ delta = - distance; } aindex = - delta/distance; tip.innerhtml = images[aindex-1].getattribute("alt"); tip.style.bottom = "-40px"; links[abefore-1].classname = ""; links[aindex-1].classname = "hover"; abefore = aindex; transition(slide,{begin:delta,change:distance,ease:easeinoutcubic,onend:function(){ move(tip); }}) settimeout(arguments.callee,2000) },2000) })() } var move = function(el){ var begin = parsefloat(el.style.bottom),speed = 1; el.bottom = begin; (function(){ settimeout(function(){ el.style.bottom = el.bottom + speed + "px";//移动 el.bottom += speed; speed *= 1.5;//下一次移动的距离 if(el.bottom >= 0){ el.style.bottom = "0px"; }else{ settimeout(arguments.callee,25);//每移动一次停留25毫秒 } },25) })() } window.onload = function(){ rotate("album"); } </script> <h4>javascript图片轮换 by 司徒正美</h4> <div id="album"> <ul> <li> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index1"> <img alt="月光下的花瓣" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s001.jpg" /> </a> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index2"> <img alt="清澈的湖水" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s002.jpg" /> </a> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index3"> <img alt="荒漠上的植物" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s003.jpg" /> </a> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index4"> <img alt="末日霓虹" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s004.jpg" /> </a> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index5"> <img alt="绿·生意" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s005.jpg" /> </a> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index6"> <img alt="又是收获的季节" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s006.jpg" /> </a> </li> </ul> <span> <a href="#index1" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >1</a> <a href="#index2" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >2</a> <a href="#index3" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >3</a> <a href="#index4" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >4</a> <a href="#index5" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >5</a> <a href="#index6" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >6</a> </span> </div>
最后为信息栏上的按钮绑定点击事件就行了。
<!doctype html> <title>javascript图片轮换 by 司徒正美</title> <meta charset="utf-8"/> <meta name="keywords" content="javascript图片轮换 by 司徒正美" /> <meta name="description" content="javascript图片轮换 by 司徒正美" /> <style type="text/css"> #album { position:relative; width:400px; height:300px; border:10px solid #8080c0; } #album ul,#album li { list-style:none; margin:0; padding:0; } #album ul { position:relative; height:300px; width:400px; overflow:hidden; background:transparent url(http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s001.jpg) no-repeat 0 0; } #album li { position:absolute; width:1000%; } #album a { float:left; } #album img { display:block; border:0; } #album span { position:absolute; right:0; bottom:10px; } #album span a { display:block; margin-right:10px; width:15px; height:15px; line-height:15px; text-align:center; text-decoration:none; color:gray; background:transparent url(http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_button.gif) no-repeat -15px 0; } #album span a:hover,#album span a.hover { color:#f8f8f8; background-position:0 0; } </style> <script type="text/javascript"> var easeinoutcubic= function(pos){ if ((pos/=0.5) < 1) return 0.5*math.pow(pos,3); return 0.5 * (math.pow((pos-2),3) + 2); } var transition = function(el){ var options = arguments[1] || {}, begin = options.begin,//开始位置 change = options.change,//变化量 duration = options.duration || 500,//缓动效果持续时间 ftp = options.ftp || 50, onend = options.onend || function(){}, ease = options.ease,//要使用的缓动公式 end = begin + change,//结束位置 starttime = new date().gettime();//开始执行的时间 (function(){ settimeout(function(){ var newtime = new date().gettime(),//当前帧开始的时间 timestamp = newtime - starttime,//逝去时间 delta = ease(timestamp / duration); el.style.left = math.ceil(begin + delta * change) + "px" if(duration <= timestamp){ el.style.left = end + "px"; onend(); }else{ settimeout(arguments.callee,1000/ftp); } },1000/ftp) })() } var rotate = function(id){ try{document.execcommand("backgroundimagecache", false, true);}catch(e){}; var container = document.getelementbyid(id), slide = container.getelementsbytagname("li")[0], paginater = container.getelementsbytagname("span")[0], links = paginater.getelementsbytagname("a"), images = slide.getelementsbytagname("img"), length = links.length, abefore = length, aindex = 1; slide.innerhtml += slide.innerhtml; var tip = document.createelement("li");//信息栏 tip.style.csstext = "position:absolute;bottom:0;width:400px;height:40px;line-height:40px;text-indent:2em;"; slide.parentnode.appendchild(tip); if(!+"\v1"){ tip.style.csstext += "color:#369;background:#fff;filter:alpha(opacity=50)"; }else{ tip.style.csstext += "color:#fff;background: rgba(164, 173, 183, .65);"; } var item = slide.getelementsbytagname("a"), critical = item[length].offsetleft,//临界值 distance = critical/length, delta = - distance; paginater.onclick = function(e){//实现手动切换 e = e || window.event; var target = e.srcelement ? e.srcelement : e.target; if(target.nodename.tolowercase() == "a"){//事件代理 var _aindex = aindex; aindex = target.getattribute("href").slice(-1); !+"\v1" ?(e.returnvalue = false) :(e.preventdefault()); delta = - distance * _aindex; var change = (aindex - _aindex) * distance; if(aindex >= _aindex){ transition(slide,{begin:delta,change: change,ease:easeinoutcubic}) }else{ transition(slide,{begin:delta,change: -change,ease:easeinoutcubic}) } } }; (function(){/*实现自动轮换图片*/ settimeout(function(){ (aindex > length) && (aindex = 1); delta = - distance * aindex; tip.innerhtml = images[aindex-1].getattribute("alt");//改变信息栏的文字 links[abefore-1].classname = "";//改变按钮的样式 links[aindex-1].classname = "hover";//改变按钮的样式 abefore = aindex; aindex++; transition(slide,{begin:delta,change:distance,ease:easeinoutcubic}) settimeout(arguments.callee,2000) },2000) })() } window.onload = function(){ rotate("album"); } </script> <h4>javascript图片轮换 by 司徒正美</h4> <div id="album"> <ul> <li> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index1"> <img alt="月光下的花瓣" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s001.jpg" /> </a> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index2"> <img alt="清澈的湖水" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s002.jpg" /> </a> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index3"> <img alt="荒漠上的植物" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s003.jpg" /> </a> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index4"> <img alt="末日霓虹" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s004.jpg" /> </a> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index5"> <img alt="绿·生意" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s005.jpg" /> </a> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index6"> <img alt="又是收获的季节" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s006.jpg" /> </a> </li> </ul> <span> <a href="#index1" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >1</a> <a href="#index2" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >2</a> <a href="#index3" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >3</a> <a href="#index4" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >4</a> <a href="#index5" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >5</a> <a href="#index6" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >6</a> </span> </div>
有的人很懒,不喜欢点击,想在按钮上一掠而过也能看到效果。这简单,我们把绑定函数独立出来,分别绑定到onclick事件与onmouseover事件上就行了。现在我们换一个缓动公式,反正这东西多着呢。比如这个pulse,像蛇信子一样来回多次振动(默认5次,有第二个参数可以自己调,我调到10次),非常有意思。你们可以试试一下子掠过所有按钮,效果是何等的炫目!
<!doctype html> <title>javascript图片轮换 by 司徒正美</title> <meta charset="utf-8"/> <meta name="keywords" content="javascript图片轮换 by 司徒正美" /> <meta name="description" content="javascript图片轮换 by 司徒正美" /> <style type="text/css"> #album { position:relative; width:400px; height:300px; border:10px solid #f2f1d7; } #album ul,#album li { list-style:none; margin:0; padding:0; } #album ul { position:relative; height:300px; width:400px; overflow:hidden; background:transparent url(http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s001.jpg) no-repeat 0 0; } #album li { position:absolute; width:1000%; } #album a { float:left; } #album img { display:block; border:0; } #album span { position:absolute; right:0; bottom:10px; } #album span a { display:block; margin-right:10px; width:15px; height:15px; line-height:15px; text-align:center; text-decoration:none; color:gray; background:transparent url(http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_button.gif) no-repeat -15px 0; } #album span a:hover,#album span a.hover { color:#f8f8f8; background-position:0 0; } </style> <script type="text/javascript"> var pulse = function(pos, pulses) { return (-math.cos((pos*((pulses||5)-.5)*2)*math.pi)/2) + .5; } var transition = function(el){ var options = arguments[1] || {}, begin = options.begin,//开始位置 change = options.change,//变化量 duration = options.duration || 500,//缓动效果持续时间 ftp = options.ftp || 50, onend = options.onend || function(){}, ease = options.ease,//要使用的缓动公式 end = begin + change,//结束位置 starttime = new date().gettime();//开始执行的时间 (function(){ settimeout(function(){ var newtime = new date().gettime(),//当前帧开始的时间 timestamp = newtime - starttime,//逝去时间 delta = ease(timestamp / duration,10); el.style.left = math.ceil(begin + delta * change) + "px" if(duration <= timestamp){ el.style.left = end + "px"; onend(); }else{ settimeout(arguments.callee,1000/ftp); } },1000/ftp) })() } var rotate = function(id){ try{document.execcommand("backgroundimagecache", false, true);}catch(e){}; var container = document.getelementbyid(id), slide = container.getelementsbytagname("li")[0], paginater = container.getelementsbytagname("span")[0], links = paginater.getelementsbytagname("a"), images = slide.getelementsbytagname("img"), length = links.length, abefore = length, aindex = 1; slide.innerhtml += slide.innerhtml; var tip = document.createelement("li");//信息栏 tip.style.csstext = "position:absolute;bottom:0;width:400px;height:40px;line-height:40px;text-indent:2em;"; slide.parentnode.appendchild(tip); if(!+"\v1"){ tip.style.csstext += "color:#369;background:#fff;filter:alpha(opacity=50)"; }else{ tip.style.csstext += "color:#fff;background: rgba(164, 173, 183, .65);"; } var item = slide.getelementsbytagname("a"), critical = item[length].offsetleft,//临界值 distance = critical/length, delta = - distance; var manualslippage = function(){ var e = arguments[0] || window.event; var target = e.srcelement ? e.srcelement : e.target; if(target.nodename.tolowercase() == "a"){//事件代理 var _aindex = aindex; aindex = target.getattribute("href").slice(-1); !+"\v1" ?(e.returnvalue = false) :(e.preventdefault()); delta = - distance * _aindex; var change = (aindex - _aindex) * distance; (aindex >= _aindex) && (change = -change); transition(slide,{begin:delta,change: change,ease:pulse}); } } paginater.onmouseover = manualslippage; paginater.onclick = manualslippage; (function(){/*实现自动轮换图片*/ settimeout(function(){ (aindex > length) && (aindex = 1); delta = - distance * aindex; tip.innerhtml = images[aindex-1].getattribute("alt");//改变信息栏的文字 links[abefore-1].classname = "";//改变按钮的样式 links[aindex-1].classname = "hover";//改变按钮的样式 abefore = aindex; aindex++; transition(slide,{begin:delta,change:distance,ease:pulse}) settimeout(arguments.callee,2000) },2000) })() } window.onload = function(){ rotate("album"); } </script> <h4>javascript图片轮换 by 司徒正美</h4> <div id="album"> <ul> <li> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index1"> <img alt="月光下的花瓣" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s001.jpg" /> </a> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index2"> <img alt="清澈的湖水" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s002.jpg" /> </a> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index3"> <img alt="荒漠上的植物" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s003.jpg" /> </a> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="index4"> <img alt="末日霓虹" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s004.jpg" /> </a> <a href="http://www.cnblogs.com/rubylouvre" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" 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rel="external nofollow" id="index6"> <img alt="又是收获的季节" src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s006.jpg" /> </a> </li> </ul> <span> <a href="#index1" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >1</a> <a href="#index2" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >2</a> <a href="#index3" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >3</a> <a href="#index4" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >4</a> <a href="#index5" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >5</a> <a href="#index6" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >6</a> </span> </div> <p>使用的是多次摇晃的残影特效pulse.<p>
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