源代码:
<!DOCTYPE html> <html> <head> <style> .siblings * { display: block; border: 2px solid lightgrey; color: lightgrey; padding: 5px; margin: 15px; } </style> <script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"> </script> <script> $(document).ready(function(){ $("li.start").prev().css({"color":"red","border":"2px solid red"}); }); </script> </head> <body> <div style="width:500px;" class="siblings"> <ul>ul (parent) <li>li (sibling)</li> <li>li (the previous sibling of li with class name "start")</li> <li class="start">li (sibling with class name "start")</li> <li>li (sibling)</li> <li>li (sibling)</li> </ul> </div> </body> </html>
运行结果：