正文 9576字数 124,049阅读

不废话，直接上代码，

前台：
<br><?php <br>$category=$this->getMyVal('category',$_GET);<br>$xiaohuaList=Xiaohua::model()->getXiaohao($category); //打开页面默认显示的数据<br>?><br><br><div id="waterfall">     <?php foreach ($xiaohuaList as $xiaohua):?>         <?php $q_id=$xiaohua->id;?>         <div class="cell m-bg item-h border_h">             <div class="border-solid-b padding-b-5 text-center"><span class="g-bg glyphicon glyphicon-sunglasses margin-r-5" aria-hidden="true"></span><strong class="color-5 fx_t_<?php echo $q_id;?>"><?php echo CHtml::encode($xiaohua->title);?></strong></div>             <div class="padding-t-5 fx_c_<?php echo $q_id;?>"><?php echo $xiaohua->content;?></div>             <div class="padding-t-5 text-right"><span onclick="fx(<?php echo $q_id;?>);" class="fx cursor_p" data-id="<?php echo $q_id;?>"><span class="g-bg glyphicon glyphicon-share-alt margin-r-5" aria-hidden="true"></span>分享</span></div>         </div>     <?php endforeach;?> </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)       var html='';       var _url='<?php echo $this->createUrl('listXiaohua');?>';       $.ajax({         type: "get",         url: _url,         dataType : "json",         async:false,         success: function(data){             for( var i in data){                 var q_id=data[i].id;                 html+='<div class="cell m-bg item-h border_h"><div class="border-solid-b padding-b-5 text-center"><span class="g-bg glyphicon glyphicon-sunglasses margin-r-5" aria-hidden="true"></span><strong class="color-5 fx_t_'+q_id+'">'+data[i].title+'</strong></div><div class="padding-t-5 fx_c_'+q_id+'">'+data[i].content+'</div>'                      +'<div class="padding-t-5 text-right"><span onclick="fx('+q_id+');" class="fx cursor_p" data-id="'+q_id+'"><span class="g-bg glyphicon glyphicon-share-alt margin-r-5" aria-hidden="true"></span>分享</span></div></div>';             }       }});       return $(html);   },   column_width:376,   column_space:10,   auto_imgHeight:true,   insert_type:1 } $('#waterfall').waterfall(opt); </script>
Run code
Cut to clipboard


    后台：
    public function actionListXiaohua() {     $xiaohuaList=Xiaohua::model()->getXiaohua();//获取笑话信息     echo CJSON::encode($xiaohuaList); }
    Run code
    Cut to clipboard


      js：
      ;(function($){    var    //参数    setting={       column_width:240,//列宽       column_className:'waterfall_column',//列的类名       column_space:2,//列间距       cell_selector:'.cell',//要排列的砖块的选择器，context为整个外部容器       img_selector:'img',//要加载的图片的选择器       auto_imgHeight:true,//是否需要自动计算图片的高度       fadein:true,//是否渐显载入       fadein_speed:600,//渐显速率，单位毫秒       insert_type:1, //单元格插入方式，1为插入最短那列，2为按序轮流插入       getResource:function(index){ }  //获取动态资源函数,必须返回一个砖块元素集合,传入参数为加载的次数    },    //    waterfall=$.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);
      Run code
      Cut to clipboard


        好了，全部完成了。这里看瀑布流效果演示。