不廢話，直接上代碼，您也可以點這裡看瀑布流效果演示。前臺：getMyVal('category',$_GET);$xiaohuaList=Xiaohua::model()->getXiaohao($category); //打開頁面預設顯示的數據?> id;?> ">title);?> ...
前臺：
<?php
$category=$this->getMyVal('category',$_GET);
$xiaohuaList=Xiaohua::model()->getXiaohao($category); //打開頁面預設顯示的數據
?>
<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為已載入次數,render為渲染介面函數,接受一個dom集合或jquery對象作為參數。通過ajax等非同步方法得到的數據可以傳入該介面進行渲染，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>
後臺：
public function actionListXiaohua() {
$xiaohuaList=Xiaohua::model()->getXiaohua();//獲取笑話信息
echo CJSON::encode($xiaohuaList);
}
js：
;(function($){
var
//參數
setting={
column_width:240,//列寬
column_className:'waterfall_column',//列的類名
column_space:2,//列間距
cell_selector:'.cell',//要排列的磚塊的選擇器，context為整個外部容器
img_selector:'img',//要載入的圖片的選擇器
auto_imgHeight:true,//是否需要自動計算圖片的高度
fadein:true,//是否漸顯載入
fadein_speed:600,//漸顯速率，單位毫秒
insert_type:1, //單元格插入方式，1為插入最短那列，2為按序輪流插入
getResource:function(index){ } //獲取動態資源函數,必須返回一個磚塊元素集合,傳入參數為載入的次數
},
//
waterfall=$.waterfall={},//對外信息對象
$waterfall=null;//容器
waterfall.load_index=0, //載入次數
$.fn.extend({
waterfall:function(opt){
opt=opt||{};
setting=$.extend(setting,opt);
$waterfall=waterfall.$waterfall=$(this);
waterfall.$columns=creatColumn();
render($(this).find(setting.cell_selector).detach(),false); //重排已存在元素時強制不漸顯
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(){//創建列
waterfall.column_num=calculateColumns();//列數
//迴圈創建列
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(){//計算需要的列數
var num=Math.floor(($waterfall.innerWidth())/(setting.column_width+setting.column_space));
if(num<1){ num=1; } //保證至少有一列
return num;
}
function render(elements,fadein){//渲染元素
if(!$(elements).length) return;//沒有元素
var $columns = waterfall.$columns;
$(elements).each(function(i){
if(!setting.auto_imgHeight||setting.insert_type==2){//如果給出了圖片高度，或者是按順序插入，則不必等圖片載入完就能計算列的高度了
if(setting.insert_type==1){
insert($(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'||$(this).find(setting.img_selector).length>0){//本身是圖片或含有圖片
var image=new Image;
var src=$(this)[0].nodeName.toLowerCase()=='img'?$(this).attr('src'):$(this).find(setting.img_selector).attr('src');
image.onload=function(){//圖片載入後才能自動計算出尺寸
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(){//處理IE等瀏覽器的緩存問題：圖片緩存後不會再觸發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{//不用考慮圖片載入
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得到元素的渲染介面
render(elems,true);
}
function insert($element,fadein){//把元素插入最短列
if(fadein){//漸顯
$element.css('opacity',0).appendTo(waterfall.$columns.eq(calculateLowest())).fadeTo(setting.fadein_speed,1);
}else{//不漸顯
$element.appendTo(waterfall.$columns.eq(calculateLowest()));
}
}
function insert2($element,i,fadein){//按序輪流插入元素
if(fadein){//漸顯
$element.css('opacity',0).appendTo(waterfall.$columns.eq(i%waterfall.column_num)).fadeTo(setting.fadein_speed,1);
}else{//不漸顯
$element.appendTo(waterfall.$columns.eq(i%waterfall.column_num));
}
}
function calculateLowest(){//計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(){//獲取資源
$.waterfall.load_index++;
return setting.getResource($.waterfall.load_index,public_render);
}
waterfall._scrollTimer=null;//延遲滾動載入計時器
function onScroll(){//滾動載入
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();//最短列底部距離瀏覽器視窗頂部的距離
var scrollTop=document.documentElement.scrollTop||document.body.scrollTop||0;//滾動條距離
var windowHeight=document.documentElement.clientHeight||document.body.clientHeight||0;//視窗高度
if(scrollTop>=bottom-windowHeight){
render(getElements(),true);
}
},100);
}
function onResize(){//視窗縮放時重新排列
if(calculateColumns()==waterfall.column_num) return; //列數未改變，不需要重排
var $cells=waterfall.$waterfall.find(setting.cell_selector);
waterfall.$columns.remove();
waterfall.$columns=creatColumn();
render($cells,false); //重排已有元素時強制不漸顯
}
})(jQuery);
