如何更改活动导航项的背景颜色

Question

我在页面中使用引导导航选项卡，我想更改活动选项卡的背景颜色和文本颜色。以下是选项卡的 HTML 代码

<div class="tab-content">
<div class="os-tabs-controls">
<ul class="nav nav-pills text-upper pl-2 pr-2">
<li class="nav-item tabs p-2">
<a class="nav-link" data-toggle="tab" href="#leavelist" aria-expanded="true">
LeaveList
</a>
</li>
<li class="nav-item tabs p-2">
<a class="nav-link" data-toggle="tab" href="#procurementlist" aria-expanded="false">
Procurement List
</a>
</li>
</ul>
</div>
</div>

我的CSS如下

<Style>
.nav-item a:active{
color: white;
background-color: red;
}
</Style>

当我单击选项卡时，上面的代码工作正常，但立即它变回默认颜色样式。 请任何人调查这个问题并帮助我使其正常工作。

Answer 1

它现在可以工作了，实际上我用我的自定义样式覆盖了默认样式 通过添加以下 CSS

<style>
.nav-pills .nav-link.active, .nav-pills .show > .nav-link {
color: #F0F8FF;
background-color: #CD0B0B;
}
</style>

Answer 2

你可以用jQuery来做到这一点：

$('.nav-item a').click(function(e) {
$('.nav-item a').removeClass('current_page_item');
$(this).addClass('current_page_item');
});

.CSS：

.current_page_item {
background-color: red;
color: white;
}

JSFiddle here： link

Answer 3

很简单，在页面上的引用链接中添加类

.active{
color: white;
background-color: red;
}

<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-9aIt2nRpC12Uk9gS9baDl411NQApFmC26EwAOH8WgZl5MYYxFfc+NcPb1dKGj7Sk" crossorigin="anonymous"><script
src="https://code.jquery.com/jquery-3.5.1.js"
integrity="sha256-QWo7LDvxbWT2tbbQ97B53yJnYU3WhH/C8ycbRAkjPDc="
crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js" integrity="sha384-OgVRvuATP1z7JjHLkuOU7Xw704+h835Lr+6QL9UvYjZE3Ipu6Tp75j7Bh/kR0JKI" crossorigin="anonymous"></script>
<div class="tab-content">
<div class="os-tabs-controls">
<ul class="nav nav-pills text-upper pl-2 pr-2">
<li class="nav-item tabs p-2">
<a class="nav-link" data-toggle="tab" href="#leavelist" aria-expanded="true">
LeaveList
</a>
</li>
<li class="nav-item tabs p-2">
<a class="nav-link active" data-toggle="tab" href="#procurementlist" aria-expanded="false">
Procurement List
</a>
</li>
</ul>
</div>
</div>

如果你想在悬停时产生相同的效果，你可以简单地将其添加到导航链接类上。

---

对于单页网站：

$('body').scrollspy({
target: '#myNavbar',
offset: 50
});

.navbar-nav li>a:hover,.navbar-nav li>a:focus,.navbar-nav li.active {
color: white;
background-color: red;
}

<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-9aIt2nRpC12Uk9gS9baDl411NQApFmC26EwAOH8WgZl5MYYxFfc+NcPb1dKGj7Sk" crossorigin="anonymous"><script
src="https://code.jquery.com/jquery-3.5.1.js"
integrity="sha256-QWo7LDvxbWT2tbbQ97B53yJnYU3WhH/C8ycbRAkjPDc="
crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js" integrity="sha384-OgVRvuATP1z7JjHLkuOU7Xw704+h835Lr+6QL9UvYjZE3Ipu6Tp75j7Bh/kR0JKI" crossorigin="anonymous"></script>
<div class="tab-content">
<div class="os-tabs-controls">
<ul class="nav nav-pills text-upper pl-2 pr-2">
<li class="nav-item tabs p-2">
<a class="nav-link" data-toggle="tab" href="#leavelist" aria-expanded="true">
LeaveList
</a>
</li>
<li class="nav-item tabs p-2">
<a class="nav-link" data-toggle="tab" href="#procurementlist" aria-expanded="false">
Procurement List
</a>
</li>
</ul>
</div>
</div>


<div id="leavelist">Section One</div>
<div id="procurementlist">Section Two</div>