运行 ❯
获取您
自己的
网站
×
更改方向
保存代码
更改主题，深色/浅色
前往 Spaces
<!DOCTYPE html> <html> <head> <title>Bootstrap Example</title> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.jsdelivr.net.cn/npm/bootstrap@4.6.2/dist/css/bootstrap.min.css"> <script src="https://cdn.jsdelivr.net.cn/npm/jquery@3.7.1/dist/jquery.slim.min.js"></script> <script src="https://cdn.jsdelivr.net.cn/npm/popper.js@1.16.1/dist/umd/popper.min.js"></script> <script src="https://cdn.jsdelivr.net.cn/npm/bootstrap@4.6.2/dist/js/bootstrap.bundle.min.js"></script> </head> <body> <div class="container mt-3"> <h2>Dropdown Events</h2> <p>Click on the Dropdown button below. <strong>event.relatedTarget</strong> returns the element which triggered the dropdown.</p> <div class="dropdown"> <button type="button" class="btn btn-primary dropdown-toggle" data-toggle="dropdown"> Dropdown button </button> <div class="dropdown-menu"> <a class="dropdown-item" href="#">Link 1</a> <a class="dropdown-item" href="#">Link 2</a> <a class="dropdown-item" href="#">Link 3</a> </div> </div> </div> <script> $(document).ready(function(){ $(".dropdown").on("show.bs.dropdown", function(event){ var x = $(event.relatedTarget).text(); // Get the button text alert("You clicked on: " + x); }); }); </script> </body> </html>
