仿照着做了一下，但是为什么会是这样的效果？
<!Doctype>
<html>
<head>
<title>瀑布流布局</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script type="text/javascript" src="jquery-1.8.3.min.js"/></script>
<script type="text/javascript">
$(window).on("load",function(){
waterfall();
});
function waterfall(){
var $box=$('#main>div');
var $boxW=$box.eq(0).outerWidth();
var num=Math.floor($(window).width()/$boxW);
$('#main').width($boxW*num).css('margin','0 auto');
var boxHArr=[];
$box.each(function( index, value){
var boxH=$box.eq(index).outerHeight();
if(index<num){
boxHArr[index]=boxH;
}else{
var minH=Math.min.apply(null,boxHArr);
var minIndex=$.inArray(minH,boxHArr);
$(value).css({
'positon':'absolute',
'top':minH+'px',
'left':minIndex*$boxW+'px'
});
boxHArr[minIndex]+=$box.eq(index).outerHeight();
}
});
}
</script>
<style type="text/css">
*{
margin: 0;
padding: 0;
}
#main{
padding-top:10px;
position:relative;
}
.box{
padding:15px 0 0 15px;
float: left;
}
.pic{
padding: 10px;
box-shadow: 0 0 6px #ccc;
border: 1px solid #ccc;
border-radius: 5px;
}
.pic img{
width: 162px;
height: auto;
}
</style>
</head>
<body>
<div id="main">
<div class="box">
<div class="pic">
<img src="images/0.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/1.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/2.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/3.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/4.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/5.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/6.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/7.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/8.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/9.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/10.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/0.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/1.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/2.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/3.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/4.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/5.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/6.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/7.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/8.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/9.jpg" />
</div>
</div>
<div class="box">
<div class="pic">
<img src="images/10.jpg" />
</div>
</div>
</div>
</body>
</html>
