原生JavaScript对CSS进行格式化和压缩

全是正则表达式
测试地址:http://jsfiddle.net/dtdxrk/AX5wN/embedded/result/
 1 <!DOCTYPE>
 2 <HTML xmlns="http://www.w3.org/1999/xhtml">
 3 <HEAD>
 4 <meta charset="utf-8" />
 5 <TITLE>原生JavaScript对CSS进行格式化和压缩</TITLE>
 6 <style type="text/css">
 7 *{margin: 0;padding: }
 8 body{font-family: '微软雅黑';}
 9 h1{font-weight: normal;font-size: 30px;border-bottom: 1px solid #ccc;margin-bottom: 20px;background: green;color: #fff;padding: 10px;}
10 input{padding: 5px 20px;}
11 </style>
12 <BODY>
13 <h1>原生JavaScript对CSS进行格式化和压缩</h1>
14 <input type="submit" value="+格式化" id="format" />
15 <input type="submit" value="-压缩化" id="compress" />
16 <textarea name="" rows="" cols="" style="100%;height:500px;" id="code">
17 input,button{ 
18 height:20px;background-color: #ffffff;/*border:1px solid #333333;*/ 
19 } 
20 </textarea>
21 
22 <script>
23 (function(){
24   var $ = function(id){return document.getElementById(id)};
25 
26   $("format").onclick = function(){
27     $("code").value = cssFormat($("code").value);
28   };
29 
30   $("compress").onclick = function(){
31     $("code").value = cssCompress($("code").value);
32   };
33 
34   function cssFormat(code){ 
35     code = code.replace(/\n/ig,''); 
36     code = code.replace(/(\s){2,}/ig,'$1'); 
37     code = code.replace(/\t/ig,''); 
38     code = code.replace(/\n\}/ig,'\}'); 
39     code = code.replace(/\n\{\s*/ig,'\{'); 
40     code = code.replace(/(\S)\s*\}/ig,'$1\}'); 
41     code = code.replace(/(\S)\s*\{/ig,'$1\{'); 
42     code = code.replace(/\{\s*(\S)/ig,'\{$1'); 
43     return code; 
44   }
45 
46   function cssCompress(code){ 
47     code = code.replace(/(\s){2,}/ig,'$1'); 
48     // code = code.replace(/(\S)\s*\{/ig,'$1\n{'); //{的换行
49     code = code.replace(/\*\/(.[^\}\{]*)}/ig,'\*\/\n$1}'); 
50     code = code.replace(/\/\*/ig,'\n\/\*'); 
51     code = code.replace(/;\s*(\S)/ig,';\n\t$1'); 
52     code = code.replace(/\}\s*(\S)/ig,'\}\n$1'); 
53     code = code.replace(/\n\s*\}/ig,'\n\}'); 
54     code = code.replace(/\{\s*(\S)/ig,'\{\n\t$1'); 
55     code = code.replace(/(\S)\s*\*\//ig,'$1\*\/'); 
56     code = code.replace(/\*\/\s*([^\}\{]\S)/ig,'\*\/\n\t$1'); 
57     code = code.replace(/(\S)\}/ig,'$1\n\}'); 
58     code = code.replace(/(\n){2,}/ig,'\n'); 
59     return code; 
60   } 
61 
62 }());
63 
64 </script>
65 
66 </BODY>
67 </HTML>