- <html>  
 
-     <head>  
 
-         <meta charset="utf-8">  
 
-         <meta name="" content="content">  
 
-         <meta name="viewport" content="width=device-width, initial-scale=1.0,maximum-scale=1.0, user-scalable=no"/>  
 
-         <title></title>  
 
-         <link rel="stylesheet" type="text/css" href="">  
 
-         <script src="js/jquery1.8.3.min.js"></script>  
 
-     </head>  
 
-     <script>  
 
-         /*$(document).ready(function(){  
 
-             $(‘.product_tit:even‘).css({"color":"#21c178"});  
 
-             $(‘.product_tit:odd‘).css({"color":"#459ee6"});  
 
-         })*/  
 
-     </script>  
 
- <div> <span style="white-space:pre">   </span><style>  
 
-   <span style="white-space:pre">      </span>#list2:nth-of-type(odd) .product_tit{color:#21c178}  
 
-   <span style="white-space:pre">      </span>#list2:nth-of-type(even) .product_tit{color:#459ee6}  
 
- <span style="white-space:pre">  </span></style> </div>   <body>  
 
-         <style type="text/css">   
 
-         .list1:nth-of-type(odd){ color:#ffcc00;}  
 
-         .list1:nth-of-type(even){ color:#00ccff;}  
 
-         </style>   
 
-         <div>   
 
-             <ul>   
 
-                 <li class="list1">111111111111111111111111111</li>   
 
-                 <li class="list1">222222222222222222222222222</li>   
 
-                 <li class="list1">333333333333333333333333333</li>   
 
-                 <li class="list1">444444444444444444444444444</li>   
 
-                 <li class="list1">555555555555555555555555555</li>   
 
-                 <li class="list1">666666666666666666666666666</li>   
 
-             </ul>   
 
-         <hr />   
 
-         <div id="list2">  
 
-             <div class="product_tit">7777777777777777777777777777</div>  
 
-         </div>  
 
-         <div id="list2">  
 
-             <div class="product_tit">8888888888888888888888888888</div>  
 
-         </div>  
 
-         <div id="list2">  
 
-             <div class="product_tit">9999999999999999999999999999</div>  
 
-         </div>  
 
-         <div id="list2">  
 
-             <div class="product_tit">0000000000000000000000000000</div>  
 
-         </div>  
 
-         <div id="list2">  
 
-             <div class="product_tit">7777777777777777777777777777</div>  
 
-         </div>  
 
-         </div>  
 
-     </body>  
 
- </html>  
 
 
 
备注:自己添加jquery
 
错误的css:
 
- <style>  
 
-     .product_tit:nth-of-type(odd){color:#21c178}  
 
-     .product_tit:nth-of-type(odd){color:#459ee6}  
 
- </style>  
 
 
 
 
错误的原因:class=product_tit的每个元素都没有兄弟节点,nth-of-type并不会起作用