<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title>
第一坑
<script src="./bootstrap-3.3.7-dist/js/jQuery.js"></script> <script src="./bootstrap-3.3.7-dist/js/bootstrap.js"></script> <link rel="stylesheet" href="./bootstrap-3.3.7-dist/css/bootstrap.css">
先引入jQuery ./引入
</head> <body> <script> console.log($) </script> <div class="dropdown"> <button class="btn btn-default dropdown-toggle" type="button" id="dropdownMenu1" data-toggle="dropdown" aria-haspopup="true" aria-expanded="true"> Dropdown <span class="caret"></span> </button> <ul class="dropdown-menu" aria-labelledby="dropdownMenu4"> <li><a href="#">Regular link</a></li> <li class="disabled"><a href="#">Disabled link</a></li> <li role="separator" class="divider"></li> <li><a href="#">Another link</a></li> </ul> </div> </body> </html>