Javascript Bootstrap 4 默认选项卡窗格活动淡入不工作
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Bootstrap 4 default tab-pane active fade in not working
提问by suchislife
In the process of researching dynamic nav-tabs, I've decided to add a fade in effect when the user clicks on the tab of their choice.
在研究动态导航标签的过程中，我决定在用户单击他们选择的标签时添加淡入效果。
When the modalfirst loads, the following line of html makes the HOME tab appear by the fault.
当模态首次加载时，以下 html 行使 HOME 选项卡出现故障。
<div id="home" class="tab-pane active">
The above works fine but...
以上工作正常，但...
if I replace the above with the following html code...
如果我用下面的 html 代码替换上面的...
<div id="home" class="tab-pane active fade in">
When the modalfirst loads, div home is not faded in. It only works once the user clicks on a different tab and then back on HOME tab.
当模态首次加载时，div home不会淡入. 它仅在用户单击不同的选项卡然后返回 HOME 选项卡时才有效。
My question is, is this behavior normal?
我的问题是，这种行为正常吗？
<!-- 1. BOOTSTRAP v4.0.0 CSS !-->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<!-- 2. GOOGLE JQUERY JS v3.2.1 JS !-->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<!-- 3. BOOTSTRAP v4.0.0 JS !-->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
<!-- Toggleable / Dynamic Tabs -->
<nav class="nav nav-tabs nav-justified">
<a class="nav-item nav-link active" data-toggle="tab" href="#home">Home</a>
<a class="nav-item nav-link" data-toggle="tab" href="#menu1">Menu 1</a>
<a class="nav-item nav-link" data-toggle="tab" href="#menu2">Menu 2</a>
<a class="nav-item nav-link disabled" data-toggle="tab" href="#menu3">Disabled</a>
</nav>
<div class="tab-content">
<div id="home" class="tab-pane active fade in">
<h3>HOME</h3>
<p>Some content in menu HOME.</p>
</div>
<div id="menu1" class="tab-pane fade">
<h3>Menu 1</h3>
<p>Some content in menu 1.</p>
</div>
<div id="menu2" class="tab-pane fade">
<h3>Menu 2</h3>
<p>Some content in menu 2.</p>
</div>
<div id="menu3" class="tab-pane fade">
<h3>Menu 3</h3>
<p>Some content in menu 3.</p>
</div>
</div>回答by Lakindu Gunasekara
USE fade showinstead of fade inin the tab-content classes
USEfade show而不是fade in在选项卡内容类中
Reference https://getbootstrap.com/docs/4.0/components/navs/?#javascript-behavior
参考 https://getbootstrap.com/docs/4.0/components/navs/?#javascript-behavior
This is the way of solving it on bootstrap 4. But in bootstrap 3, your code should be working.
这是在引导程序 4 上解决它的方法。但是在引导程序 3 中，您的代码应该可以工作。
Related question for bootstrap 3. Bootstrap tab - active class not working on page loading
引导程序 3 的相关问题。引导程序 选项卡 - 活动类无法加载页面
<!-- 1. BOOTSTRAP v4.0.0 CSS !-->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<!-- 2. GOOGLE JQUERY JS v3.2.1 JS !-->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<!-- 3. BOOTSTRAP v4.0.0 JS !-->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
<!-- Toggleable / Dynamic Tabs -->
<nav class="nav nav-tabs nav-justified">
<a class="nav-item nav-link active" data-toggle="tab" href="#home">Home</a>
<a class="nav-item nav-link" data-toggle="tab" href="#menu1">Menu 1</a>
<a class="nav-item nav-link" data-toggle="tab" href="#menu2">Menu 2</a>
<a class="nav-item nav-link disabled" data-toggle="tab" href="#menu3">Disabled</a>
</nav>
<div class="tab-content">
<div id="home" class="tab-pane fade show active">
<h3>HOME</h3>
<p>Some content in menu HOME.</p>
</div>
<div id="menu1" class="tab-pane fade">
<h3>Menu 1</h3>
<p>Some content in menu 1.</p>
</div>
<div id="menu2" class="tab-pane fade">
<h3>Menu 2</h3>
<p>Some content in menu 2.</p>
</div>
<div id="menu3" class="tab-pane fade">
<h3>Menu 3</h3>
<p>Some content in menu 3.</p>
</div>
</div>回答by subir biswas
You just need to add below elements and bootstrap css.
您只需要添加以下元素和引导 css。
<!-- 1. BOOTSTRAP v4.0.0 CSS !-->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<!-- 2. GOOGLE JQUERY JS v3.2.1 JS !-->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<!-- 3. BOOTSTRAP v4.0.0 JS !-->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
<ul class="nav nav-tabs" id="myTab" role="tablist">
<li class="nav-item">
<a class="nav-link active" id="home-tab" data-toggle="tab" href="#home" role="tab" aria-controls="home" aria-selected="true">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" id="profile-tab" data-toggle="tab" href="#profile" role="tab" aria-controls="profile" aria-selected="false">Profile</a>
</li>
<li class="nav-item">
<a class="nav-link" id="contact-tab" data-toggle="tab" href="#contact" role="tab" aria-controls="contact" aria-selected="false">Contact</a>
</li>
</ul>
<div class="tab-content" id="myTabContent">
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<div class="tab-pane fade" id="profile" role="tabpanel" aria-labelledby="profile-tab"><p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p></div>
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</div>