console
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css">
<script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script>
<script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script>
<style>
body {
position: relative;
}
ul.text-pills {
top: 0px;
position: sticky;
}
div.col-8 div {
height: 500px;
}
</style></head>
<body>
<div class="container">
<h2>Home</h2>
<br>
<ul class="nav nav-pills" role="tablist">
<li class="nav-item">
<a class="nav-link active" data-toggle="pill" href="#home">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" data-toggle="pill" href="#menu1">Menu 1</a>
</li>
<li class="nav-item">
<a class="nav-link" data-toggle="pill" href="#menu2">Menu 2</a>
</li>
</ul>
<div class="tab-content">
<div id="home" class="container tab-pane active"><br>
<h3>HOME</h3>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
</div>
<div id="menu1" class="container tab-pane fade"><br>
<h3>Menu 1</h3>
<p>Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>
</div>
<div id="menu2" class="container tab-pane fade" ><br>
<div class="row">
<nav class="col-sm-3 col-4" id="myScrollspy" >
<ul class="nav nav-pills flex-column text-pills">
<li class="nav-item">
<a class="nav-link" href="#section1">Section 1</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#section2">Section 2</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#section3">Section 3</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#">Section 4</a>
<div class="dropdown-menu">
<a class="dropdown-item" href="#section41">Link 1</a>
<a class="dropdown-item" href="#section42">Link 2</a>
</div>
</li>
</ul>
</nav>
<div class="col-sm-9 col-8" data-target="#myScrollspy">
<button id="section1" class="btn bg-success" data-toggle="modal" data-target="#myModal">
<h1>Section 1</h1>
<p>Try to scroll this section and look at the navigation list while scrolling!</p>
</button>
<button id="section2" class="btn bg-warning">
<h1>Section 2</h1>
<p>Try to scroll this section and look at the navigation list while scrolling!</p>
</button>
<button id="section3" class="btn bg-secondary">
<h1>Section 3</h1>
<p>Try to scroll this section and look at the navigation list while scrolling!</p>
</button>
<button id="section41" class="btn bg-danger">
<h1>Section 4-1</h1>
<p>Try to scroll this section and look at the navigation list while scrolling!</p>
</button>
<button id="section42" class="btn bg-info">
<h1>Section 4-2</h1>
<p>Try to scroll this section and look at the navigation list while scrolling!</p>
</button>
</div>
<div class="modal fade" id="myModal">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<h4 class="modal-title">XXXX</h4>
<button type="button" class="close" data-dismiss="modal">×</button>
</div>
<div class="modal-body">
<pre>
XXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXX
</pre>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">关闭</button>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>