因此，出于某种原因，当页面缩小时显示的 Bootstrap 导航切换不会在点击时切换。我已确保首先导入 jquery 库，所以我不确定为什么它不起作用。
<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title>JPV Painting Plus</title>
<script src="https://code.jquery.com/jquery-3.4.0.js"></script>
<link rel="stylesheet" type="text/css" href="js\bootstrap.min.js" />
<link rel="stylesheet" type="text/css" href="css\bootstrap.min.css" />
<link rel="stylesheet" type="text/css" href="css\styles.css" />
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNavAltMarkup">
<div class="navbar-nav">
<a class="nav-item nav-link active" href="#">Home <span class="sr-only">(current)</span></a>
<a class="nav-item nav-link" href="#">Features</a>
<a class="nav-item nav-link" href="#">Pricing</a>
<a class="nav-item nav-link disabled" href="#">Disabled</a>
</div>
</div>
</nav>
<img id="index-banner" src="img\index-banner.jpg"/>
<h1 class="text-center font-weight-bold"></h1>
</body>
</html>
最佳答案
您正在将 javascript 文件作为样式表导入，您应该将其作为脚本导入。
注意添加样式表时如何添加 link 元素，但对于 js 文件，您需要 script 元素。
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" rel="stylesheet" />
<title>JPV Painting Plus</title>
<body>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNavAltMarkup">
<div class="navbar-nav">
<a class="nav-item nav-link active" href="#">Home <span class="sr-only">(current)</span></a>
<a class="nav-item nav-link" href="#">Features</a>
<a class="nav-item nav-link" href="#">Pricing</a>
<a class="nav-item nav-link disabled" href="#">Disabled</a>
</div>
</div>
</nav>
<img id="index-banner" src="img\index-banner.jpg" />
<h1 class="text-center font-weight-bold"></h1>
</body>
</html>关于html - Bootstrap 导航栏切换不切换，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55873131/