1，Bootstrap写法：
效果图：
代码：
<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="Generator" content="EditPlus®"> <meta name="Author" content=""> <meta name="Keywords" content=""> <meta name="Description" content=""> <title> 应用</title> <link href="bootstrap.min.css" rel="stylesheet" style="test/css"> <script src="jquery-2.2.3.min.js"></script> <script src="bootstrap.min.js"></script> </head> <body> <br/> <div class="container"> <ul id="myTabs" class="nav nav-tabs"> <li class="active"><a href="#home" data-toggle="tab">Home</a></li> <li><a href="#profile" data-toggle="tab">Profile</a></li> <li class="dropdown"> <a href="#" id="myTabdrop1" class="dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span> </a> <ul class="dropdown-menu" role="menu"> <li><a href="#D1" tabindex="-1" data-toggle="tab">D1</a></li> <li><a href="#D2" tabindex="-1" data-toggle="tab">D2</a></li> </ul> </li> </ul> <div id="myTabContent" class="tab-content"> <div class="tab-pane fade in active" id="home"> <p>1</p> </div> <div class="tab-pane fade" id="profile"> <p>2</p> </div> <div class="tab-pane fade" id="D1"> <p>3</p> </div> <div class="tab-pane fade" id="D2"> <p>4</p> </div> </div> </div> <!-- <script> // $("#myTabs a:last").tab("show"); // $("#myTabs li:eq(0) a").tab("show"); //改变eq后面的数字就行，从0开始 $("a[data-toggle='tab']").on("shown.bs.tab",function(e){ alert("Hello"); }) </script> --> </body> </html>
Js写法：
效果图：
晚上更新