现在正在尝试设计导航栏，但我的代码似乎无法使用它们。
折叠图标位于 navbar-brand 旁边，然后 navbar-links 位于它旁边。
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link href="https://fonts.googleapis.com/css?family=Nunito:200,300,400,700" rel="stylesheet">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<link rel="stylesheet" href="app.css">
<title>Website</title>
</head>
<body>
<nav id="mainNavbar "class="navbar navbar-dark bg-dark navbar-expand-md">
<a class="navbar-brand" href="#">TEST</a>
<button class="navbar-toggle" data-toggle="collapse" data-target="#nav-links">
<span class="navbar-toggler-icon" id="navbar-icon"></span>
</button>
<div class="collapse navbar-collapse" id="nav-links">
<ul class="navbar-nav">
<li class="nav-item">
<a href="#" class="nav-link">HOME</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">ABOUT</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">TICKETS</a>
</li>
</ul>
</div>
</nav>
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
</body>
</html>
最佳答案
您必须向按钮添加 navbar-toggler 类而不是 navbar-toggle 参见代码:
<nav id="mainNavbar "class="navbar navbar-dark bg-dark navbar-expand-md">
<a class="navbar-brand" href="#">TEST</a>
<button class="navbar-toggler" data-toggle="collapse" data-target="#nav-links">
<span class="navbar-toggler-icon" id="navbar-icon"></span>
</button>
<div class="collapse navbar-collapse" id="nav-links">
<ul class="navbar-nav">
<li class="nav-item">
<a href="#" class="nav-link">HOME</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">ABOUT</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link">TICKETS</a>
</li>
</ul>
</div>
</nav>
关于html - 导航栏无法正确折叠和展开，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/58709083/