0
菜單有切換菜單,但是當我點擊其他菜單時,它不會關閉並保持打開狀態。我需要關閉擴展菜單,當我點擊其他menu.`如何關閉擴展菜單當我點擊其他菜單
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<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>
<nav>
<ul class="nav">
<li><a data-toggle="collapse in" data-parent="#accordion" href="#">Link 1</a>
</li>
<li><a href="#" id="btn-1" data-toggle="collapse" data-target="#submenu1" aria-expanded="false">Link 2 (toggle)</a>
<ul class="nav collapse" id="submenu1" role="menu" aria-labelledby="btn-1">
<li><a href="#">Link 2.1</a>
</li>
<li><a href="#">Link 2.2</a>
</li>
<li><a href="#">Link 2.3</a>
</li>
</ul>
</li>
<li><a href="#">Link 3</a>
</li>
<li><a href="#">Link 4</a>
</li>
</ul>
</nav>