why tabs not working in bootstrap 4.0.0

问题

using the bootstrap tabs control. It displays correctly in bootstrap 3.3.7 https://jsfiddle.net/steve_richter/evn2ncbo/7/

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <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/3.3.1/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>

<div class="container">
  <h3>Tabs</h3>
  <ul class="nav nav-tabs">
    <li class="active"><a href="#">Home</a></li>
    <li><a href="#">Menu 1</a></li>
    <li><a href="#">Menu 2</a></li>
    <li><a href="#">Menu 3</a></li>
  </ul>
  <br>
  <p><strong>Note:</strong> This example shows how to create a basic navigation tab. It is not toggleable/dynamic yet (you can't click on the links to display different content)- see the last example in the Bootstrap Tabs and Pills Tutorial to find out how this can be done.</p>
</div>

</body>
</html>

but incorrectly in bootstrap 4.0.0 https://jsfiddle.net/steve_richter/evn2ncbo/1/

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
</head>
<body>

<div class="container">
  <h3>Tabs</h3>
  <ul class="nav nav-tabs">
    <li class="active"><a href="#">Home</a></li>
    <li><a href="#">Menu 1</a></li>
    <li><a href="#">Menu 2</a></li>
    <li><a href="#">Menu 3</a></li>
  </ul>
  <br>
  <p><strong>Note:</strong> This example shows how to create a basic navigation tab. It is not toggleable/dynamic yet (you can't click on the links to display different content)- see the last example in the Bootstrap Tabs and Pills Tutorial to find out how this can be done.</p>
</div>

</body>
</html>

Why would the older version work and not the current one?

thanks,

回答1:

In Bootstrap 4, your <a> elements need the nav-link class in order for the tabs to show up correctly. Ideally your <li> elements should also be given the nav-item class. Finally, your active class should go on the <a> tag, not the <li> tag.

Here's a working example:

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
</head>
<body>

<div class="container">
  <h3>Tabs</h3>
  <ul class="nav nav-tabs">
    <li class="nav-item"><a class="nav-link active" href="#">Home</a></li>
    <li class="nav-item"><a class="nav-link" href="#">Menu 1</a></li>
    <li class="nav-item"><a class="nav-link" href="#">Menu 2</a></li>
    <li class="nav-item"><a class="nav-link" href="#">Menu 3</a></li>
  </ul>
  <br>
  <p><strong>Note:</strong> This example shows how to create a basic navigation tab. It is not toggleable/dynamic yet (you can't click on the links to display different content)- see the last example in the Bootstrap Tabs and Pills Tutorial to find out how this can be done.</p>
</div>

</body>
</html>

More examples can be found in the official documentation.

来源：https://stackoverflow.com/questions/49397576/why-tabs-not-working-in-bootstrap-4-0-0

标签

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bootstrap-4