JS案例之7——瀑布流布局(2)

 

这个例子与上一篇类似,唯一的区别是排序的方式有差别。上一篇是在高度最小的列里插入内容,这个案例是按顺序放置内容。

两种方法各有优缺点。第一种需要在图片内容加载完成的情况下有效。这个例子不需要在window.onload之后执行,直接计算每列的索引,按照顺序一列一列的放置。用下面的图做说明。

 

说明:

JS案例之7——瀑布流布局(2)

上一个案例如下图:

JS案例之7——瀑布流布局(2)

 

源代码:

 1 <!DOCTYPE html>
 2 <html>
 3 <head>
 4 <meta http-equiv="Content-Type" Content="text/html; charset=utf-8;">
 5 <title>waterfall布局</title>
 6 <meta name="author" content="rainna" />
 7 <meta name="keywords" content="rainna's js lib" />
 8 <meta name="description" content="waterfall布局" />
 9 <style>
10 *{margin:0;padding:0;}
11 li{list-style:none;}
12 p{margin:20px;}
13 
14 .list li{float:left;min-height:10px;margin:0 0 0 20px;}
15 .list .item{margin:0 0 10px;}
16 .list img{display:block;width:100%;}
17 
18 #content{display:none;}
19 </style>
20 </head>
21 
22 <body>
23 <div class="content" id="content">
24     <div class="item"><img src="http://cued.xunlei.com/demos/publ/img/P_101.jpg" />01</div>
25     <div class="item"><img src="http://cued.xunlei.com/demos/publ/img/P_102.jpg" />02</div>
26     <div class="item"><img src="http://cued.xunlei.com/demos/publ/img/P_103.jpg" />03</div>
27     <div class="item"><img src="http://cued.xunlei.com/demos/publ/img/P_104.jpg" />04</div>
28     <div class="item"><img src="http://cued.xunlei.com/demos/publ/img/P_105.jpg" />05</div>
29     <div class="item"><img src="http://cued.xunlei.com/demos/publ/img/P_106.jpg" />06</div>
30     <div class="item"><img src="http://cued.xunlei.com/demos/publ/img/P_107.jpg" />07</div>
31     <div class="item"><img src="http://cued.xunlei.com/demos/publ/img/P_108.jpg" />08</div>
32     <div class="item"><img src="http://cued.xunlei.com/demos/publ/img/P_109.jpg" />09</div>
33     <div class="item"><img src="http://cued.xunlei.com/demos/publ/img/P_110.jpg" />10</div>
34     <div class="item"><img src="http://cued.xunlei.com/demos/publ/img/P_111.jpg" />11</div>
35     <div class="item"><img src="http://cued.xunlei.com/demos/publ/img/P_112.jpg" />12</div>
36     <div class="item"><img src="http://cued.xunlei.com/demos/publ/img/P_113.jpg" />13</div>
37     <div class="item"><img src="http://cued.xunlei.com/demos/publ/img/P_114.jpg" />14</div>
38     <div class="item"><img src="http://cued.xunlei.com/demos/publ/img/P_115.jpg" />15</div>
39     <div class="item"><img src="http://cued.xunlei.com/demos/publ/img/P_116.jpg" />16</div>
40     <div class="item"><img src="http://cued.xunlei.com/demos/publ/img/P_117.jpg" />17</div>
41 </div>
42 <div class="list" id="list"></div>
43 
44 <script>
45 var waterFall = {
46     content:document.getElementById('content'),    //存放内容的容器
47     list:document.getElementById('list'),   //将要展示的列表容器
48 
49     setOptions:function(options){
50         options = options || {};
51         this.colNum = options.num || 3;   //显示的列数,默认显示3列 
52         this.colWidth = options.width || 200;   //每列的宽度
53     },
54     
55     //构建列数
56     setColumn:function(){
57         var self = this;
58         var html = '';
59         for(var i=0,l=self.colNum;i<l;i++){
60             html += '<li style="width:'+ self.colWidth +'px;"></li>';
61         }
62         self.list.innerHTML = html;
63         
64         self.column = self.list.getElementsByTagName('li');
65     },
66     
67     //填充内容
68     setCont:function(cnt){
69         var self = this;
70         self.index = self.index%self.colNum || 0;   //将要放置内容的列的索引,默认从0开始
71         self.column[self.index].appendChild(cnt);
72         self.index ++;
73         if(!!self.content.children[0]){
74             self.setCont(self.content.children[0]);
75         }
76     },
77     
78     init:function(options){
79         var self = this;
80         self.setOptions(options);
81         self.setColumn();
82         self.setCont(self.content.children[0]);
83     }
84 };
85 
86 waterFall.init();
87 </script>
88 </body>
89 </html>

 

下载地址: http://pan.baidu.com/s/1jG0ygVO

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