jQuery淡入淡出瀑布流效果
<!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=utf-8" /> <title>jQuery淡入淡出瀑布流效果</title> <style> @charset "utf-8"; *{ margin:0; padding:0;} body { font:12px/1.5 Arial; color:#666; background:#EDEDED;} ul,li{ list-style:none;} a{ color:#666; text-decoration:none;} a:hover{ text-decoration:none; color:#000;} img{border:0 none;} #waterfall{ text-align:center; width:1000px; margin:0 auto;} #waterfall img{ width:203px;} #waterfall .cell{ padding:10px 0px 5px 0px; width:223px;border:1px solid #E3E3E3; background:#fff; margin-top:20px;box-shadow: 0px 2px 3px 1px #ccc;} #waterfall .cell:hover{box-shadow: 0px 2px 3px 1px #999;} </style> <script src="https://files.cnblogs.com/files/heyiming/jquery-2.1.4.min.js"></script> <script> ;(function($){ var //参数 setting={ column_width:240,//列宽 column_className:'waterfall_column',//列的类名 column_space:10,//列间距 cell_selector:'.cell',//要排列的砖块的选择器,context为整个外部容器 img_selector:'img',//要加载的图片的选择器 auto_imgHeight:true,//是否需要自动计算图片的高度 fadein:true,//是否渐显载入 fadein_speed:600,//渐显速率,单位毫秒 insert_type:1, //单元格插入方式,1为插入最短那列,2为按序轮流插入 getResource:function(index){ } //获取动态资源函数,必须返回一个砖块元素集合,传入参数为加载的次数 }, // waterfall=$.waterfall={},//对外信息对象 $waterfall=null;//容器 waterfall.load_index=0, //加载次数 $.fn.extend({ waterfall:function(opt){ opt=opt||{}; setting=$.extend(setting,opt); $waterfall=waterfall.$waterfall=$(this); waterfall.$columns=creatColumn(); render($(this).find(setting.cell_selector).detach(),false); //重排已存在元素时强制不渐显 waterfall._scrollTimer2=null; $(window).bind('scroll',function(){ clearTimeout(waterfall._scrollTimer2); waterfall._scrollTimer2=setTimeout(onScroll,300); }); waterfall._scrollTimer3=null; $(window).bind('resize',function(){ clearTimeout(waterfall._scrollTimer3); waterfall._scrollTimer3=setTimeout(onResize,300); }); } }); function creatColumn(){//创建列 waterfall.column_num=calculateColumns();//列数 //循环创建列 var html=''; for(var i=0;i<waterfall.column_num;i++){ html+='<div class="'+setting.column_className+'" style="width:'+setting.column_width+'px; display:inline-block; *display:inline;zoom:1; margin-left:'+setting.column_space/2+'px;
margin-right:'+setting.column_space/2+'px; vertical-align:top; overflow:hidden"></div>'; } $waterfall.prepend(html);//插入列 return $('.'+setting.column_className,$waterfall);//列集合 } function calculateColumns(){//计算需要的列数 var num=Math.floor(($waterfall.innerWidth())/(setting.column_width+setting.column_space)); if(num<1){ num=1; } //保证至少有一列 return num; } function render(elements,fadein){//渲染元素 if(!$(elements).length) return;//没有元素 var $columns = waterfall.$columns; $(elements).each(function(i){ if(!setting.auto_imgHeight||setting.insert_type==2){//如果给出了图片高度,或者是按顺序插入,则不必等图片加载完就能计算列的高度了 if(setting.insert_type==1){ insert($(elements).eq(i),setting.fadein&&fadein);//插入元素 }else if(setting.insert_type==2){ insert2($(elements).eq(i),i,setting.fadein&&fadein);//插入元素 } return true;//continue } if($(this)[0].nodeName.toLowerCase()=='img'||$(this).find(setting.img_selector).length>0){//本身是图片或含有图片 var image=new Image; var src=$(this)[0].nodeName.toLowerCase()=='img'?$(this).attr('src'):$(this).find(setting.img_selector).attr('src'); image.onload=function(){//图片加载后才能自动计算出尺寸 image.onreadystatechange=null; if(setting.insert_type==1){ insert($(elements).eq(i),setting.fadein&&fadein);//插入元素 }else if(setting.insert_type==2){ insert2($(elements).eq(i),i,setting.fadein&&fadein);//插入元素 } image=null; } image.onreadystatechange=function(){//处理IE等浏览器的缓存问题:图片缓存后不会再触发onload事件 if(image.readyState == "complete"){ image.onload=null; if(setting.insert_type==1){ insert($(elements).eq(i),setting.fadein&&fadein);//插入元素 }else if(setting.insert_type==2){ insert2($(elements).eq(i),i,setting.fadein&&fadein);//插入元素 } image=null; } } image.src=src; }else{//不用考虑图片加载 if(setting.insert_type==1){ insert($(elements).eq(i),setting.fadein&&fadein);//插入元素 }else if(setting.insert_type==2){ insert2($(elements).eq(i),i,setting.fadein&&fadein);//插入元素 } } }); } function public_render(elems){//ajax得到元素的渲染接口 render(elems,true); } function insert($element,fadein){//把元素插入最短列 if(fadein){//渐显 $element.css('opacity',0).appendTo(waterfall.$columns.eq(calculateLowest())).fadeTo(setting.fadein_speed,1); }else{//不渐显 $element.appendTo(waterfall.$columns.eq(calculateLowest())); } } function insert2($element,i,fadein){//按序轮流插入元素 if(fadein){//渐显 $element.css('opacity',0).appendTo(waterfall.$columns.eq(i%waterfall.column_num)).fadeTo(setting.fadein_speed,1); }else{//不渐显 $element.appendTo(waterfall.$columns.eq(i%waterfall.column_num)); } } function calculateLowest(){//计算最短的那列的索引 var min=waterfall.$columns.eq(0).outerHeight(),min_key=0; waterfall.$columns.each(function(i){ if($(this).outerHeight()<min){ min=$(this).outerHeight(); min_key=i; } }); return min_key; } function getElements(){//获取资源 $.waterfall.load_index++; return setting.getResource($.waterfall.load_index,public_render); } waterfall._scrollTimer=null;//延迟滚动加载计时器 function onScroll(){//滚动加载 clearTimeout(waterfall._scrollTimer); waterfall._scrollTimer=setTimeout(function(){ var $lowest_column=waterfall.$columns.eq(calculateLowest());//最短列 var bottom=$lowest_column.offset().top+$lowest_column.outerHeight();//最短列底部距离浏览器窗口顶部的距离 var scrollTop=document.documentElement.scrollTop||document.body.scrollTop||0;//滚动条距离 var windowHeight=document.documentElement.clientHeight||document.body.clientHeight||0;//窗口高度 if(scrollTop>=bottom-windowHeight){ render(getElements(),true); } },100); } function onResize(){//窗口缩放时重新排列 if(calculateColumns()==waterfall.column_num) return; //列数未改变,不需要重排 var $cells=waterfall.$waterfall.find(setting.cell_selector); waterfall.$columns.remove(); waterfall.$columns=creatColumn(); render($cells,false); //重排已有元素时强制不渐显 } })(jQuery); </script> </head> <body> <div id="waterfall"> <div class="cell"><a href="#"><img src="http://images.cnblogs.com/cnblogs_com/heyiming/947284/t_1.jpg" /></a><p><a href="javascript:void(0)">图片</a></p></div> <div class="cell"><a href="#"><img src="http://images.cnblogs.com/cnblogs_com/heyiming/947284/t_2.jpg" /></a><p><a href="javascript:void(0)">图片</a></p></div> <div class="cell"><a href="#"><img src="http://images.cnblogs.com/cnblogs_com/heyiming/947284/t_3.jpg" /></a><p><a href="javascript:void(0)">图片</a></p></div> <div class="cell"><a href="#"><img src="http://images.cnblogs.com/cnblogs_com/heyiming/947284/t_4.jpg" /></a><p><a href="javascript:void(0)">图片</a></p></div> <div class="cell"><a href="#"><img src="http://images.cnblogs.com/cnblogs_com/heyiming/947284/t_6.jpg" /></a><p><a href="javascript:void(0)">图片</a></p></div> <div class="cell"><a href="#"><img src="http://images.cnblogs.com/cnblogs_com/heyiming/947284/t_7.jpg" /></a><p><a href="javascript:void(0)">图片</a></p></div> <div class="cell"><a href="#"><img src="http://images.cnblogs.com/cnblogs_com/heyiming/947284/t_8.jpg" /></a><p><a href="javascript:void(0)">图片</a></p></div> <div class="cell"><a href="#"><img src="http://images.cnblogs.com/cnblogs_com/heyiming/947284/t_9.jpg" /></a><p><a href="javascript:void(0)">图片</a></p></div> <div class="cell"><a href="#"><img src="http://images.cnblogs.com/cnblogs_com/heyiming/947284/t_10.jpg" /></a><p><a href="javascript:void(0)">图片</a></p></div> <div class="cell"><a href="#"><img src="http://images.cnblogs.com/cnblogs_com/heyiming/947284/t_11.jpg" /></a><p><a href="javascript:void(0)">图片</a></p></div> <div class="cell"><a href="#"><img src="http://images.cnblogs.com/cnblogs_com/heyiming/947284/t_12.jpg" /></a><p><a href="javascript:void(0)">图片</a></p></div> <div class="cell"><a href="#"><img src="http://images.cnblogs.com/cnblogs_com/heyiming/947284/t_1.jpg" /></a><p><a href="javascript:void(0)">图片</a></p></div> <div class="cell"><a href="#"><img src="http://images.cnblogs.com/cnblogs_com/heyiming/947284/t_13.jpg" /></a><p><a href="javascript:void(0)">图片</a></p></div> <div class="cell"><a href="#"><img src="http://images.cnblogs.com/cnblogs_com/heyiming/947284/t_14.jpg" /></a><p><a href="javascript:void(0)">图片</a></p></div> <div class="cell"><a href="#"><img src="http://images.cnblogs.com/cnblogs_com/heyiming/947284/t_8.jpg" /></a><p><a href="javascript:void(0)">图片</a></p></div> <div class="cell"><a href="#"><img src="http://images.cnblogs.com/cnblogs_com/heyiming/947284/t_5.jpg" /></a><p><a href="javascript:void(0)">图片</a></p></div> <div class="cell"><a href="#"><img src="http://images.cnblogs.com/cnblogs_com/heyiming/947284/t_6.jpg" /></a><p><a href="javascript:void(0)">图片</a></p></div> <div class="cell"><a href="#"><img src="http://images.cnblogs.com/cnblogs_com/heyiming/947284/t_12.jpg" /></a><p><a href="javascript:void(0)">图片</a></p></div> </div> <script> var opt={ getResource:function(index,render){//index为已加载次数,render为渲染接口函数,接受一个dom集合或jquery对象作为参数。通过ajax等异步方法得到的数据可以传入该接口进行渲染,如 render(elem) if(index>=7) index=index%7+1; var html=''; for(var i=20*(index-1);i<20*(index-1)+20;i++){ var k=''; for(var ii=0;ii<3-i.toString().length;ii++){ k+='0'; } k+=i; var src="http://cued.xunlei.com/demos/publ/img/P_"+k+".jpg"; html+='<div class="cell"><a href="#"><img src="'+src+'" /></a><p>'+k+'</p></div>'; } return $(html); }, auto_imgHeight:true, insert_type:1 } $('#waterfall').waterfall(opt); </script> </body> </html>