我使用Bootstrap 4创建了这个可折叠的导航栏，效果很好，但我想在用户点击链接时关闭它。有什么办法吗？谢谢
html导航栏：
<nav class="navbar navbar-toggleable-md fixed-top">
<button id="nav-btn"class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarDiv" aria-expanded="false" aria-label="Toggle navigation">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<div class="container">
<a class="navbar-brand" href="#"><img src="Images/logo.png" width="60px"></a>
<div class="collapse navbar-collapse" id="navbarDiv">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="#home">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#about-us">About</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#pricing">Pricing</a>
</li>
</ul>
</div>
</div>
</nav>
css for .icon-bar，因为Bootstrap 4不使用icon-bar类。
.navbar-toggler .icon-bar {
margin: 7px;
display: block;
width: 22px;
height: 1px;
background-color: #cccccc;
border-radius: 1px;
}
解决方法
您可以将折叠组件添加到此类链接中。
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="#home" data-toggle="collapse" data-target=".navbar-collapse.show">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#about-us" data-toggle="collapse" data-target=".navbar-collapse.show">About</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#pricing" data-toggle="collapse" data-target=".navbar-collapse.show">Pricing</a>
</li>
</ul>
Demo using ‘data-toggle’ method
或者，(也许是一种更好的方式)使用像这样的jQuery ..
$('.navbar-nav>li>a').on('click',function(){
$('.navbar-collapse').collapse('hide');
});
更新2018 Bootstrap 4.0.0
