Question

使用引导标签控件。它在bootstrap 3.3.7中正确显示 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>

但在bootstrap 4.0.0中不正确 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>

为什么旧版本可以使用而不是当前版本？

感谢，

Answer 1

在Bootstrap 4中，您的<a>元素需要nav-link类才能使标签正确显示。理想情况下，您的<li>元素也应该被赋予nav-item类。最后，您的active课程应该使用<a>代码，而不是<li>代码。

这是一个有效的例子：

<!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>

可以在 the official documentation 中找到更多示例。

标签在bootstrap 4.0.0中不起作用的原因

1 个答案: