index.html
<!doctype html>
<html lang="en">
<head>
<!--网站编码格式，UTF-8 国际编码，GBK或 gb2312 中文编码-->
<meta charset="UTF-8">
<meta name="Keywords" content="">
<meta name="Description" content="">
<title>面向对象js瀑布流</title>
<link href="css/css.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<div id="main">
<div class="box">
<div class="img"><img src="data:images/0.jpg"/></div>
</div>
<div class="box">
<div class="img"><img src="data:images/1.jpg"/></div>
</div>
<div class="box">
<div class="img"><img src="data:images/2.jpg"/></div>
</div>
<div class="box">
<div class="img"><img src="data:images/3.jpg"/></div>
</div>
<div class="box">
<div class="img"><img src="data:images/4.jpg"/></div>
</div>
<div class="box">
<div class="img"><img src="data:images/5.jpg"/></div>
</div> <div class="box">
<div class="img"><img src="data:images/6.jpg"/></div>
</div>
<div class="box">
<div class="img"><img src="data:images/7.jpg"/></div>
</div> <div class="box">
<div class="img"><img src="data:images/8.jpg"/></div>
</div>
<div class="box">
<div class="img"><img src="data:images/9.jpg"/></div>
</div>
<div class="box">
<div class="img"><img src="data:images/10.jpg"/></div>
</div>
<div class="box">
<div class="img"><img src="data:images/11.jpg"/></div>
</div> <div class="box">
<div class="img"><img src="data:images/12.jpg"/></div>
</div>
<div class="box">
<div class="img"><img src="data:images/13.jpg"/></div>
</div>
<div class="box">
<div class="img"><img src="data:images/14.jpg"/></div>
</div>
<div class="box">
<div class="img"><img src="data:images/15.jpg"/></div>
</div>
<div class="box">
<div class="img"><img src="data:images/16.jpg"/></div>
</div>
<div class="box">
<div class="img"><img src="data:images/17.jpg"/></div>
</div>
<div class="box">
<div class="img"><img src="data:images/18.jpg"/></div>
</div>
</div>
<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript" src="js/js.js"></script>
</body>
</html>
css.css
*{margin:0px;padding:0px;font-family:'迷你简卡通';}
html,body{width:100%;height:100%;}
ul{list-style:none;}
img{border:0px;}
#main{position:relative;}
#main .box{padding:10px 0px 0px 10px;float:left;
}
#main .box .img{padding:10px;box-shadow: 0 0 6px #ccc;border-radius: 5px;border:1px solid #ccc;}
#main .box .img img{width:162px;height:auto}
js.js
window.onload=function(){
var attr={'data':[{'src':'1.jpg'},{'src':'2.jpg'},{'src':'3.jpg'},{'src':'4.jpg'}]};
new Waterfull("main","box",attr).start()
}
function Waterfull(id,box,attr){
this.dataInt=attr;
this.id=id;
this.box=box;
this.num=6;
}
Waterfull.prototype={
start:function(){
var _this=this;
var oParent=document.getElementById(this.id);
var attr=getclass(oParent,this.box);
var iPinW=attr[0].offsetWidth;// 一个块框pin的宽
oParent.style.cssText='width:'+iPinW*this.num+'px;margin:0px auto;';
this.position1()//初始化加载HTML中的图片
window.onscroll=function(){
_this.scroll()
}
},
position1:function(){//图片DIV定位
var oParent=document.getElementById(this.id);
var attr=getclass(oParent,this.box);
var hattr=[];
for(var i=0;i<attr.length;i++){
if(i<this.num){
hattr.push(attr[i].offsetHeight)
}
else{
var minH=Math.min.apply(null,hattr);//继承属性
var index=getindex(minH,hattr)
attr[i].style.position="absolute";
attr[i].style.left=attr[index].offsetLeft+"px";
attr[i].style.top=minH+"px";
hattr[index]+=attr[i].offsetHeight;
}
}
},
checkscroll:function(){//判断是否加载
var oParent=document.getElementById(this.id);
var attr=getclass(oParent,this.box);
lastH=attr[attr.length-1].offsetTop+parseInt(attr[attr.length-1].offsetHeight/2);
scrolltop=document.documentElement.scrollTop||document.body.scrollTop;
client=document.documentElement.clientHeight;
return (lastH<client+scrolltop)?true:false
},
scroll:function(){//加载
var oParent=document.getElementById(this.id);
var attr=getclass(oParent,this.box);
if(this.checkscroll()){
for(var i in this.dataInt.data){
var obox=document.createElement("div");
obox.className="box";
oParent.appendChild(obox)
var oimg=document.createElement("div");
oimg.className="img";
obox.appendChild(oimg);
var img=document.createElement("img");
img.src='images/'+this.dataInt.data[i].src;//dataInt["data"][i]也可
oimg.appendChild(img);
}
}
this.position1()//加载图片后重新定位。
}
}
//获取CLASS函数
function getclass(parent,className){
var obj=parent.getElementsByTagName('*');
var pinS=[];
for (var i=0;i<obj.length;i++) {
if (obj[i].className==className){
pinS.push(obj[i]);
}
};
return pinS;
}
//获取数组中一个值的索引。
function getindex(a,hattr){
for(var i=0;i<hattr.length;i++){
if(hattr[i]==a){
return i
}
}
}