效果图一：
效果图二：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>New Web Project</title> <style type="text/css"> #content { width: 400px; height: 200px; } #tab_bar { width: 400px; height: 20px; float: left; } #tab_bar ul { padding: 0px; margin: 0px; height: 20px; text-align: center; } #tab_bar li { list-style-type: none; float: left; width: 133.3px; height: 20px; background-color: gray; } .tab_css { width: 400px; height: 200px; background-color: orange; display: none; float: left; } </style> <script type="text/javascript"> var myclick = function(v) { var llis = document.getElementsByTagName("li"); for(var i = 0; i < llis.length; i++) { var lli = llis[i]; if(lli == document.getElementById("tab" + v)) { lli.style.backgroundColor = "orange"; } else { lli.style.backgroundColor = "gray"; } } var divs = document.getElementsByClassName("tab_css"); for(var i = 0; i < divs.length; i++) { var divv = divs[i]; if(divv == document.getElementById("tab" + v + "_content")) { divv.style.display = "block"; } else { divv.style.display = "none"; } } } </script> </head> <body> <div id="content"> <div id="tab_bar"> <ul> <li id="tab1" onclick="myclick(1)" style="background-color: orange"> tab1 </li> <li id="tab2" onclick="myclick(2)"> tab2 </li> <li id="tab3" onclick="myclick(3)"> tab3 </li> </ul> </div> <div class="tab_css" id="tab1_content" style="display: block"> <div>页面一</div> </div> <div class="tab_css" id="tab2_content"> <div>页面二</div> </div> <div class="tab_css" id="tab3_content"> <div>页面三</div> </div> </div> </body> </html>