Bootstrap 4 Default Tab-pane Active Fade In Not Working


Answer :

USE fade show instead of fade in in the tab-content classes

Reference 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.

Related question for bootstrap 3. Bootstrap tab - active class not working on page loading

<!-- 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>


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