菜单工具按钮在引导程序 4 中不起作用 [英] menu toogle button not working in bootstrap 4
问题描述
在 bootstrap 4
中,当标题响应时,面包屑按钮无法正常工作.
我已经包含了 Bootstrap 4
CSS
和 bootstrap 4 js
请帮我解决问题
代码:
.navbar {高度:100px;}
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css"><nav class="navbar navbar-expand-md navbar-light bg-light fixed-top"><div class="container nopadding"><a class="navbar-brand" href="#">标识</a><button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExampleDefault" aria-controls="navbarsExampleDefault"aria-expanded="false" aria-label="切换导航"><span class="navbar-toggler-icon"></span>按钮><div class="collapse navbar-collapse" id="navbarsExampleDefault"><ul class="navbar-nav ml-auto "><li class="nav-item active"><a class="nav-link" href="#">HOME <span class="sr-only">(current)</span></a><li class="nav-item"><a>服务</a><li class="nav-item"><a>支持</a><li class="nav-item"><a>技术</a>
</nav><script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/popper.min.js"></script><script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/js/bootstrap.min.js"></script>
图片:
检查控制台中的错误 未捕获的错误:Bootstrap 的 JavaScript 需要 jQuery.jQuery 必须包含在 Bootstrap 的 JavaScript 之前.
在bootstrap js前添加jquery库
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css"integrity="sha384-/Y6pD6FV/Vv2HJnA6t+vslU6fwYXjCFtcEpHbNJ0lyAFsXTsjBbfaDjzALeQsN6M" crossorigin="anonymous"><nav class="navbar navbar-expand-md navbar-light bg-light fixed-top"><div class="container nopadding"><a class="navbar-brand" href="#">标识</a><button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExampleDefault" aria-controls="navbarsExampleDefault"aria-expanded="false" aria-label="切换导航"><span class="navbar-toggler-icon"></span>按钮><div class="collapse navbar-collapse" id="navbarsExampleDefault"><ul class="navbar-nav ml-auto "><li class="nav-item active"><a class="nav-link" href="#">HOME <span class="sr-only">(current)</span></a><li class="nav-item"><a>服务</a><li class="nav-item"><a>支持</a><li class="nav-item"><a>技术</a>