我的可折叠导航栏有什么问题？

Question

*<nav class="navbar navbar-inverse "> 
    <div class="container-fluid"> 
    <div class="navbar-header"> 
    <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#myNavbar"> 
     <span class="icon-bar"></span> 
     <span class="icon-bar"></span> 
     <span class="icon-bar"></span>       
     </button> 
     <a class="navbar-brand" href="#">MRA car Rental</a> 
    </div> 

    <div class="collapse navbar-collapse" id="myNavbar"> 
     <ul class="nav navbar-nav"> 
      <li class="active"><a href="#">Home</a></li> 
      <li><a href="#">About</a></li> 
      <li><a href="#">Gallery</a></li> 
     </ul> 
     <ul class="nav navbar-nav navbar-right"> 
     <li><a href="register.php" ><span class="glyphicon glyphicon-user"></span> Register</a></li> 
     <li><a href="login.php"><span class="glyphicon glyphicon-log-in"></span> Login</a></li> 
     </ul> 
    </div> 
    </div> 
</nav>* 

当我调整浏览器的大小并点击按钮，它不起作用。上面的代码有什么问题？

Answer 1

你有boostraps js和css文件，你可以将它们添加到你的html。

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script> 

    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> 

    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">