Bootstrap 4 默认导航栏不起作用.. [英] Bootstrap 4 default navbar is not working..
问题描述
我想获得导航栏,但在多次尝试失败后我没有得到它,我来到这里寻求帮助.
<html lang="zh-cn"><头><title>作品集</title><meta name="viewport" content="width=device-width, initial-scale=1">头部><身体><nav class="navbar navbar-default"><div class="container-fluid"><!-- 品牌和切换被分组以获得更好的移动显示--><div class="navbar-header"><button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false"><span class="sr-only">切换导航</span><span class="icon-bar"></span><span class="icon-bar"></span><span class="icon-bar"></span>按钮><a class="navbar-brand" href="#">Brand</a>
<!-- 收集导航链接、表单和其他用于切换的内容--><div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1"><ul class="nav navbar-nav"><li class="active"><a href="#">Link <span class="sr-only">(current)</span></a></li>;<li><a href="#">链接</a></li><li class="下拉菜单"><a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="插入符号"></span></a><ul class="下拉菜单"><li><a href="#">动作</a></li><li><a href="#">另一个动作</a></li><li><a href="#">这里还有别的东西</a></li><li role="separator" class="divider"></li><li><a href="#">分隔链接</a></li><li role="separator" class="divider"></li><li><a href="#">一个单独的链接</a></li><form class="navbar-form navbar-left"><div class="form-group"><input type="text" class="form-control" placeholder="Search">
<button type="submit" class="btn btn-default">提交</button></表单><ul class="nav navbar-nav navbar-right"><li><a href="#">链接</a></li><li class="下拉菜单"><a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="插入符号"></span></a><ul class="下拉菜单"><li><a href="#">动作</a></li><li><a href="#">另一个动作</a></li><li><a href="#">这里还有别的东西</a></li><li role="separator" class="divider"></li><li><a href="#">分隔链接</a></li></div><!--/.navbar-collapse --></div><!--/.container-fluid --></nav><link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css"integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcFAgWiGinAmAmFcFAGORIGINSIGINX"><script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5Kkn"cross/脚本><script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7xfakfakvskin匿名"></script><script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjPVCUar5"7xSfFWpi1MquVdAyjPVCUar5<6/脚本>