旋转木马幻灯片 – 有爱前端

<!doctype html> <html> <head> <meta charset="utf-8"> <title>旋转木马幻灯片开发</title> <style type="text/css"> /*重置*/ body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,textarea,p,blockquote,th,td{margin:0;padding:0;} table{border-collapse:collapse;border-spacing:0;} fieldset,img{border:0;} address,caption,cite,code,dfn,em,strong,th,var{font-style:normal;font-weight:normal;} ol,ul{list-style:none;} caption,th{text-align:left;} h1,h2,h3,h4,h5,h6{font-size:100%;font-weight:normal;} q:before,q:after{content: ;} abbr,acronym{border:0;} body{color:#666; background-color:#fff;font: 12px/1.5 '微软雅黑',tahoma,arial,'Hiragino Sans GB',宋体,sans-serif;} .clearfix:after {visibility:hidden;display:block;font-size:0;content:" ";clear:both;height:0;} .clearfix {zoom:1;} /*旋转木马必要样式*/ .poster-main{ position:relative;width:800px;height:270px;} .poster-main a,.poster-main img{display:block;} .poster-main .poster-list{width:800px;height:270px;} .poster-main .poster-list .poster-item{ position:absolute;left:0;top:0;} .poster-main .poster-btn{ position:absolute;top:0;width:100px;height:270px; z-index:10; cursor:pointer; opacity:0.8} .poster-main .poster-prev-btn{left:0; background: url(http://baojia.xcabc.com/Img/simple_left.png) no-repeat center center;} .poster-main .poster-next-btn{right:0; background: url(http://baojia.xcabc.com/Img/simple_right.png) no-repeat center center;} </style> <script src="http://cdn.bootcss.com/jquery/2.1.3/jquery.js"></script> <script type="text/javascript"> ;(function($){ var Carousel = function(poster){ var self = this; //保存单个旋转木马对象 this.poster = poster; this.posterItemMain = poster.find("ul.poster-list"); this.nextBtn = poster.find("div.poster-next-btn"); this.prevBtn = poster.find("div.poster-prev-btn"); this.posterItems =poster.find("li.poster-item"); if(this.posterItems.size()%2==0){ this.posterItemMain.append(this.posterItems.eq(0).clone()); this.posterItems = this.posterItemMain.children(); }; this.posterFirstItem = this.posterItems.first(); this.posterLastItem = this.posterItems.last(); this.rotateFlag = true; //默认配置参数 this.setting = { "width":1000, //幻灯片的宽度 "height":270, //幻灯片的高度 "posterWidth":640, //幻灯片第一帧的宽度 "posterHeight":270, //幻灯片第一帧的高度 "scale":0.9, //记录显示比例关系 "speed":500, "autoPlay":false, "delay":5000, "verticalAlign":"middle" //top bottom }; $.extend(this.setting,this.getSetting()); //设置配置参数值 this.setSettingValue(); this.setPosterPos(); //左旋转按钮 this.nextBtn .click(function(){ if(self.rotateFlag){ self.rotateFlag = false; self.carouseRotate("left"); }; }); //右旋转按钮 this.prevBtn .click(function(){ if(self.rotateFlag){ self.rotateFlag = false; self.carouseRotate("right"); }; }); //是否开启自动播放 if(this.setting.autoPlay){ this.autoPlay(); this.poster.hover(function(){ window.clearInterval(self.timer); },function(){ self.autoPlay(); }); }; }; Carousel.prototype = { autoPlay:function(){ var self = this; this.timer = window.setInterval(function(){ self.nextBtn.click(); },this.setting.delay); }, //旋转 carouseRotate:function(dir){ var _this_ = this; var zIndexArr = []; //左旋转 if(dir === "left"){ this.posterItems .each(function(){ var self = $(this), prev = self.prev().get(0)?self.prev():_this_.posterLastItem, width = prev.width(), height =prev.height(), zIndex = prev.css("zIndex"), opacity = prev.css("opacity"), left = prev.css("left"), top = prev.css("top"); zIndexArr.push(zIndex); self.animate({ width:width, height:height, //zIndex:zIndex, opacity:opacity, left:left, top:top },_this_.setting.speed,function(){ _this_.rotateFlag = true; }); }); //zIndex需要单独保存再设置，防止循环时候设置再取的时候值永远是最后一个的zindex this.posterItems.each(function(i){ $(this).css("zIndex",zIndexArr[i]); }); }else if(dir === "right"){//右旋转 this.posterItems .each(function(){ var self = $(this), next = self.next().get(0)?self.next():_this_.posterFirstItem, width = next.width(), height =next.height(), zIndex = next.css("zIndex"), opacity = next.css("opacity"), left = next.css("left"), top = next.css("top"); zIndexArr.push(zIndex); self.animate({ width:width, height:height, //zIndex:zIndex, opacity:opacity, left:left, top:top },_this_.setting.speed,function(){ _this_.rotateFlag = true; }); }); //zIndex需要单独保存再设置，防止循环时候设置再取的时候值永远是最后一个的zindex this.posterItems.each(function(i){ $(this).css("zIndex",zIndexArr[i]); }); }; }, //设置剩余的帧的位置关系 setPosterPos:function(){ var self = this; var sliceItems = this.posterItems.slice(1), sliceSize = sliceItems.size()/2, rightSlice = sliceItems.slice(0,sliceSize), level = Math.floor(this.posterItems.size()/2), leftSlice =sliceItems.slice(sliceSize); //设置右边帧的位置关系和宽度高度top var rw = this.setting.posterWidth, rh = this.setting.posterHeight, gap = ((this.setting.width-this.setting.posterWidth)/2)/level; var firstLeft = (this.setting.width-this.setting.posterWidth)/2; var fixOffsetLeft = firstLeft+rw; //设置左边位置关系 rightSlice.each(function(i){ level--; rw = rw *self.setting.scale; rh = rh *self.setting.scale var j = i; $(this).css({ zIndex:level, width:rw, height:rh, opacity:1/(++j), left:fixOffsetLeft+(++i)*gap-rw, top:self.setVerticalAlign(rh) }); }); //设置左边的位置关系 var lw = rightSlice.last().width(), lh =rightSlice.last().height(), oloop = Math.floor(this.posterItems.size()/2); leftSlice.each(function(i){ $(this).css({ zIndex:i, width:lw, height:lh, opacity:1/oloop, left:i*gap, top:self.setVerticalAlign(lh) }); lw = lw/self.setting.scale; lh = lh/self.setting.scale; oloop--; }); }, //设置垂直排列对齐 setVerticalAlign:function(height){ var verticalType = this.setting.verticalAlign, top = 0; if(verticalType === "middle"){ top = (this.setting.height-height)/2; }else if(verticalType === "top"){ top = 0; }else if(verticalType === "bottom"){ top = this.setting.height-height; }else{ top = (this.setting.height-height)/2; }; return top; }, //设置配置参数值去控制基本的宽度高度。。。 setSettingValue:function(){ this.poster.css({ width:this.setting.width, height:this.setting.height }); this.posterItemMain.css({ width:this.setting.width, height:this.setting.height }); //计算上下切换按钮的宽度 var w = (this.setting.width-this.setting.posterWidth)/2; //设置切换按钮的宽高，层级关系 this.nextBtn.css({ width:w, height:this.setting.height, zIndex:Math.ceil(this.posterItems.size()/2) }); this.prevBtn.css({ width:w, height:this.setting.height, zIndex:Math.ceil(this.posterItems.size()/2) }); this.posterFirstItem.css({ width:this.setting.posterWidth, height:this.setting.posterHeight, left:w, top:0, zIndex:Math.floor(this.posterItems.size()/2) }); }, //获取人工配置参数 getSetting:function(){ var setting = this.poster.attr("data-setting"); if(setting&&setting!=""){ return $.parseJSON(setting); }else{ return {}; }; } }; Carousel.init = function(posters){ var _this_ = this; posters.each(function(){ new _this_($(this)); }); }; window["Carousel"] = Carousel; })(jQuery); </script> </head> <body style="padding:50px;"> <div class="J_Poster poster-main" data-setting='{ "width":1000, "height":270, "posterWidth":640, "posterHeight":270, "scale":0.8, "autoPlay":true, "delay":2000, "speed":300 }'> <div class="poster-btn poster-prev-btn"></div> <ul class="poster-list"> <li class="poster-item"><a href="#"><img src="http://cz.xcabc.com/Img/20141105170130.jpg" width="100%" height="100%"></a></li> <li class="poster-item"><a href="#"><img src="http://cz.xcabc.com/Img/20141105170724.jpg" width="100%" height="100%"></a></li> <li class="poster-item"><a href="#"><img src="http://cz.xcabc.com/Img/20141105165501.jpg" width="100%" height="100%"></a></li> <li class="poster-item"><a href="#"><img src="http://cz.xcabc.com/Img/20141105165433.jpg" width="100%" height="100%"></a></li> <li class="poster-item"><a href="#"><img src="http://cz.xcabc.com/Img/20141105170749.jpg" width="100%" height="100%"></a></li> <li class="poster-item"><a href="#"><img src="http://cz.xcabc.com/Img/20141117174419.jpg" width="100%" height="100%"></a></li> <li class="poster-item"><a href="#"><img src="http://cz.xcabc.com/Img/20141105165433.jpg" width="100%" height="100%"></a></li> <li class="poster-item"><a href="#"><img src="http://cz.xcabc.com/Img/20140415105331.png" width="100%" height="100%"></a></li> <li class="poster-item"><a href="#"><img src="http://cz.xcabc.com/Img/20150814154418.jpg" width="100%" height="100%"></a></li> </ul> <div class="poster-btn poster-next-btn"></div> </div>  <script type="text/javascript"> $(function(){ Carousel.init($(".J_Poster")); }); </script> </body> </html>

提示：你可以先修改部分代码再运行。

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