I use want to use Bootstrap navbar for expand webpage when open in mobile phone. I use Bootstrap in html file like this code.
<html>
<head>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS" crossorigin="anonymous">
<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://cdn.jsdelivr.net/npm/[email protected]/dist/umd/popper.min.js" integrity="sha384-wHAiFfRlMFy6i5SRaxvfOCifBUQy1xHdJ/yoi7FRNXMRBu5WHdZYu1hA6ZOblgut" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.min.js" integrity="sha384-B0UglyR jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k" crossorigin="anonymous"></script>
</head>
<body>
<nav >
<div >
<li ><a href="/"><i ></i></a></li>
<a href="/">Center</a>
<button type="button" data-bs-toggle="collapse" data-bs-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span ></span>
</button>
<div id="navbarSupportedContent">
<ul >
<li >
<a href="#">Hello</a>
</li>
</ul>
</div>
</div>
</nav>
<div >
<p>
{% block content %}
{% endblock %}
</p>
</div>
</body>
</html>when I click this button why it not expand ?
How to fix it ?
CodePudding user response：
<html>
<head>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS" crossorigin="anonymous">
<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://cdn.jsdelivr.net/npm/[email protected]/dist/umd/popper.min.js" integrity="sha384-wHAiFfRlMFy6i5SRaxvfOCifBUQy1xHdJ/yoi7FRNXMRBu5WHdZYu1hA6ZOblgut" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.min.js" integrity="sha384-B0UglyR jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k" crossorigin="anonymous"></script>
</head>
<body>
<nav >
<div >
<li ><a href="/"><i ></i></a></li>
<a href="/">Center</a>
<button type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span ></span>
</button>
<div id="navbarSupportedContent">
<ul >
<li >
<a href="#">Hello</a>
</li>
</ul>
</div>
</div>
</nav>
<div >
<p>
abcd
</p>
</div>
</body>
</html> try this.
<nav >
<div >
<li ><a href="/"><i ></i></a></li>
<a href="/">Center</a>
<button type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span ></span>
</button>
<div id="navbarSupportedContent">
<ul >
<li >
<a href="#">Hello</a>
</li>
</ul>
</div>
</div>
</nav>