HTML5實現(xiàn)的圖片無限加載的瀑布流效果另帶邊框圓角陰影

字號:


    又一款網(wǎng)頁瀑布流效果,可以實現(xiàn)圖片的無限制加載。基于時下流行的HTML5技術(shù)編寫而成,演示頁面中一共調(diào)用了7張圖片,為了演示方便,這里讓其隨滾動條的滾動自動循環(huán)顯示,這樣大家更能清楚的看明白瀑布流的效果。除了實現(xiàn)瀑布流,還加入了CSS5的圖片修飾效果,比如圖片的圓角邊框、圖片陰影立體效果等,是學(xué)習(xí)瀑布流的好素材 。
    代碼如下:
    <!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=gb2312" />
    <title>jQuery無限加載瀑布流</title>
    <style type="text/css">
    /* 標(biāo)簽重定義 */
    body{padding:0;margin:0;background:#ddd url(/jscss/demoimg/201312/bg55.jpg) repeat;}
    img{border:none;}
    a{text-decoration:none;color:#444;}
    a:hover{color:#999;}
    #title{width:600px;margin:20px auto;text-align:center;}
    /* 定義關(guān)鍵幀 */
    @-webkit-keyframes shade{
    from{opacity:1;}
    15%{opacity:0.4;}
    to{opacity:1;}
    }
    @-moz-keyframes shade{
    from{opacity:1;}
    15%{opacity:0.4;}
    to{opacity:1;}
    }
    @-ms-keyframes shade{
    from{opacity:1;}
    15%{opacity:0.4;}
    to{opacity:1;}
    }
    @-o-keyframes shade{
    from{opacity:1;}
    15%{opacity:0.4;}
    to{opacity:1;}
    }
    @keyframes shade{
    from{opacity:1;}
    15%{opacity:0.4;}
    to{opacity:1;}
    }
    /* wrap */
    #wrap{width:auto;height:auto;margin:0 auto;position:relative;}
    #wrap .box{width:280px;height:auto;padding:10px;border:none;float:left;}
    #wrap .box .info{width:280px;height:auto;border-radius:8px;box-shadow:0 0 11px #666;background:#fff;}
    #wrap .box .info .pic{width:260px;height:auto;margin:0 auto;padding-top:10px;}
    #wrap .box .info .pic:hover{
    -webkit-animation:shade 3s ease-in-out 1;
    -moz-animation:shade 3s ease-in-out 1;
    -ms-animation:shade 3s ease-in-out 1;
    -o-animation:shade 3s ease-in-out 1;
    animation:shade 3s ease-in-out 1;
    }
    #wrap .box .info .pic img{width:260px;border-radius:3px;}
    #wrap .box .info .title{width:260px;height:40px;margin:0 auto;line-height:40px;text-align:center;color:#666;font-size:18px;font-weight:bold;overflow:hidden;}
    </style>
    <script type="text/javascript" src="/ajaxjs/jquery-1.6.2.min.js"></script>
    <script type="text/javascript">
    window.onload = function(){
    //運行瀑布流主函數(shù)
    PBL('wrap','box');
    //模擬數(shù)據(jù)
    var data = [{'src':'1.jpg','title':'圖片標(biāo)題'},{'src':'2.jpg','title':'圖片標(biāo)題'},{'src':'3.jpg','title':'圖片標(biāo)題'},{'src':'4.jpg','title':'圖片標(biāo)題'},{'src':'5.jpg','title':'圖片標(biāo)題'},{'src':'6.jpg','title':'圖片標(biāo)題'},{'src':'7.jpg','title':'圖片標(biāo)題'}];
    //設(shè)置滾動加載
    window.onscroll = function(){
    //校驗數(shù)據(jù)請求
    if(getCheck()){
    var wrap = document.getElementById('wrap');
    for(i in data){
    //創(chuàng)建box
    var box = document.createElement('div');
    box.className = 'box';
    wrap.appendChild(box);
    //創(chuàng)建info
    var info = document.createElement('div');
    info.className = 'info';
    box.appendChild(info);
    //創(chuàng)建pic
    var pic = document.createElement('div');
    pic.className = 'pic';
    info.appendChild(pic);
    //創(chuàng)建img
    var img = document.createElement('img');
    img.src = '/jscss/demoimg/201312/'+data[i].src;
    img.style.height = 'auto';
    pic.appendChild(img);
    //創(chuàng)建title
    var title = document.createElement('div');
    title.className = 'title';
    info.appendChild(title);
    //創(chuàng)建a標(biāo)記
    var a = document.createElement('a');
    a.innerHTML = data[i].title;
    title.appendChild(a);
    }
    PBL('wrap','box');
    }
    }
    }
    /**
    * 瀑布流主函數(shù)
    * @param wrap [Str] 外層元素的ID
    * @param box [Str] 每一個box的類名
    */
    function PBL(wrap,box){
    //1.獲得外層以及每一個box
    var wrap = document.getElementById(wrap);
    var boxs = getClass(wrap,box);
    //2.獲得屏幕可顯示的列數(shù)
    var boxW = boxs[0].offsetWidth;
    var colsNum = Math.floor(document.documentElement.clientWidth/boxW);
    wrap.style.width = boxW*colsNum+'px';//為外層賦值寬度
    //3.循環(huán)出所有的box并按照瀑布流排列
    var everyH = [];//定義一個數(shù)組存儲每一列的高度
    for (var i = 0; i < boxs.length; i++) {
    if(i<colsNum){
    everyH[i] = boxs[i].offsetHeight;
    }else{
    var minH = Math.min.apply(null,everyH);//獲得最小的列的高度
    var minIndex = getIndex(minH,everyH); //獲得最小列的索引
    getStyle(boxs[i],minH,boxs[minIndex].offsetLeft,i);
    everyH[minIndex] += boxs[i].offsetHeight;//更新最小列的高度
    }
    }
    }
    /**
    * 獲取類元素
    * @param warp [Obj] 外層
    * @param className [Str] 類名
    */
    function getClass(wrap,className){
    var obj = wrap.getElementsByTagName('*');
    var arr = [];
    for(var i=0;i<obj.length;i++){
    if(obj[i].className == className){
    arr.push(obj[i]);
    }
    }
    return arr;
    }
    /**
    * 獲取最小列的索引
    * @param minH [Num] 最小高度
    * @param everyH [Arr] 所有列高度的數(shù)組
    */
    function getIndex(minH,everyH){
    for(index in everyH){
    if (everyH[index] == minH ) return index;
    }
    }
    /**
    * 數(shù)據(jù)請求檢驗
    */
    function getCheck(){
    var documentH = document.documentElement.clientHeight;
    var scrollH = document.documentElement.scrollTop || document.body.scrollTop;
    return documentH+scrollH>=getLastH() ?true:false;
    }
    /**
    * 獲得最后一個box所在列的高度
    */
    function getLastH(){
    var wrap = document.getElementById('wrap');
    var boxs = getClass(wrap,'box');
    return boxs[boxs.length-1].offsetTop+boxs[boxs.length-1].offsetHeight;
    }
    /**
    * 設(shè)置加載樣式
    * @param box [obj] 設(shè)置的Box
    * @param top [Num] box的top值
    * @param left [Num] box的left值
    * @param index [Num] box的第幾個
    */
    var getStartNum = 0;//設(shè)置請求加載的條數(shù)的位置
    function getStyle(box,top,left,index){
    if (getStartNum>=index) return;
    $(box).css({
    'position':'absolute',
    'top':top,
    "left":left,
    "opacity":"0"
    });
    $(box).stop().animate({
    "opacity":"1"
    },999);
    getStartNum = index;//更新請求數(shù)據(jù)的條數(shù)位置
    }
    </script>
    </head>
    <body>
    <section id="title">
    <h2>瀑布流效果的學(xué)習(xí)</h2>By Smile.
    </section>
    <div id="wrap">
    <div>
    <div>
    <div><img src="/jscss/demoimg/201312/1.jpg"></div>
    <div><a href="#">圖片標(biāo)題</a></div>
    </div>
    </div>
    <div>
    <div>
    <div><img src="/jscss/demoimg/201312/2.jpg"></div>
    <div><a href="#">圖片標(biāo)題</a></div>
    </div>
    </div>
    <div>
    <div>
    <div><img src="/jscss/demoimg/201312/3.jpg"></div>
    <div><a href="#">圖片標(biāo)題</a></div>
    </div>
    </div>
    <div>
    <div>
    <div><img src="/jscss/demoimg/201312/4.jpg"></div>
    <div><a href="#">圖片標(biāo)題</a></div>
    </div>
    </div>
    <div>
    <div>
    <div><img src="/jscss/demoimg/201312/5.jpg"></div>
    <div><a href="#">圖片標(biāo)題</a></div>
    </div>
    </div>
    <div>
    <div>
    <div><img src="/jscss/demoimg/201312/6.jpg"></div>
    <div><a href="#">圖片標(biāo)題</a></div>
    </div>
    </div>
    <div>
    <div>
    <div><img src="/jscss/demoimg/201312/7.jpg"></div>
    <div><a href="#">圖片標(biāo)題</a></div>
    </div>
    </div>
    </div>
    <div>
    </div>
    </body>
    </html>