js瀑布流布局

html+js:

<!DOCTYPE HTML>
<html lang="en-US">
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
*{margin:0;padding:0;}
ul,li{list-style-type:none}
#div{width:925px; height:auto;margin:20px auto;}
ul{width:220px;float:left;margin:5px;}
</style>
<script type="text/javascript" src="ajax.js"></script>
<script type="text/javascript">
window.onload=function()
{
        var oDiv =document.getElementById("div");
        var oUl=document.getElementsByTagName("ul");
        window.onscroll=function()
        {
                var clientH=document.documentElement.clientHeight;
                var scrollH=document.documentElement.scrollTop||document.body.scrollTop;
                for(var i=0;i<oUl.length;i++)
                {
                        var aLi=oUl[i].getElementsByTagName("li")
                        var lastL=aLi[aLi.length-1];
                        if(toTop(lastL)<clientH+scrollH)
                        {
                                ajax("a.js",function(str)
                                {
                                        var json = eval('('+str+')')
                                        for(var i=0;i<json.list.length;i++)
                                        {
                                                var list=json.list[i];
                                                for(var j=0;j<list.src.length;j++)
                                                {
                                                        var oLi=document.createElement("li")
                                                        oLi.innerHTML='<img src="'+list.src[j]+'"><p>'+list.title[j]+'</p>'
                                                        oUl[i].appendChild(oLi);
                                                }
                                        }
                                })
                        }
                }
        }

        function toTop(obj)
        {
                var top=0;
                while(obj)
                {
                        top +=obj.offsetTop;
                        obj=obj.offsetParent        
                }
                return top;
        }
}
</script>
</head>
<body>
        <div id='div'>
                <ul>
                        <li>
                                <img src="images/1.jpg">
                                <p>11111111</p>
                        </li>
                        <li>
                                <img src="images/2.jpg">
                                <p>11111111</p>
                        </li>
                        <li>
                                <img src="images/3.jpg">
                                <p>11111111</p>
                        </li>
                        <li>
                                <img src="images/4.jpg">
                                <p>11111111</p>
                        </li>
                </ul>
                <ul>
                        <li>
                                <img src="images/5.jpg">
                                <p>11111111</p>
                        </li>
                        <li>
                                <img src="images/6.jpg">
                                <p>11111111</p>
                        </li>
                        <li>
                                <img src="images/7.jpg">
                                <p>11111111</p>
                        </li>
                        <li>
                                <img src="images/8.jpg">
                                <p>11111111</p>
                        </li>
                </ul>
                <ul>
                        <li>
                                <img src="images/9.jpg">
                                <p>11111111</p>
                        </li>
                        <li>
                                <img src="images/10.jpg">
                                <p>11111111</p>
                        </li>
                        <li>
                                <img src="images/11.jpg">
                                <p>11111111</p>
                        </li>
                        <li>
                                <img src="images/12.jpg">
                                <p>11111111</p>
                        </li>
                </ul>
                <ul>
                        <li>
                                <img src="images/13.jpg">
                                <p>11111111</p>
                        </li>
                        <li>
                                <img src="images/14.jpg">
                                <p>11111111</p>
                        </li>
                        <li>
                                <img src="images/15.jpg">
                                <p>11111111</p>
                        </li>
                        <li>
                                <img src="images/16.jpg">
                                <p>11111111</p>
                        </li>
                </ul>
        </div>
</body>
</html>

 

json获取文件格式：

 

 

{
        code : 0,
        list:[
                {src:["images/1.jpg","images/2.jpg","images/3.jpg","images/4.jpg"],title:['1111111','1111111','1111111','1111111']},
                {src:["images/5.jpg","images/6.jpg","images/7.jpg","images/8.jpg"],title:['1111111','1111111','1111111','1111111']},
                {src:["images/9.jpg","images/10.jpg","images/11.jpg","images/12.jpg"],title:['1111111','1111111','1111111','1111111']},
                {src:["images/13.jpg","images/14.jpg","images/15.jpg","images/16.jpg"],title:['1111111','1111111','1111111','1111111']}
        ]
}

 

AJax封装文件：

function ajax(url,sFn,nFn)
{
        var oAjax=null;
        if(window.ActiveXObject)
        {
                oAjax=new ActiveXObject("Microsoft.XMLHTTP")
        }
        else
        {
                oAjax=new XMLHttpRequest();
        }
        oAjax.open("GET",url,true)
        oAjax.send();
        oAjax.onreadystatechange=function()
        {
                if(oAjax.readyState==4)
                {
                        if(oAjax.status==200)
                        {
                                if(sFn)
                                {
                                        sFn(oAjax.responseText)
                                }
                        }
                        else
                        {
                                if(nFn)
                                {
                                        nFn(oAjax.status)
                                }
                        }
                }
        }
}

温馨提示：这个要服务器的地址下才能访问;;

 

posted @ 2012-04-20 11:00  脉凌网络  阅读(666)  评论(0)  编辑  收藏  举报