<html>  
 <head>  
 <title>标题</title>  
 <script type="text/javascript" src="jQuery\jquery-1.11.1.min.js"></script>         <script type="text/javascript"> 
            $(document).ready(document_onReady); 
   function document_onReady(){ 
                  $('.external_links').click(links_onClick);
             }   function links_onClick(){
       return confirm('You are going to visit: ' + this.href);
       }        </script> 
    </head> 
 <body>  <div >
 <a class="external_links" href="http://www.baidu.com">baidu</a><br>
 <a class="external_links" href="www.google.com">google</a><br>
 </div>  <hr><hr>
 </body>  
 </html>