导航栏按钮未出现引导程序 4

Question

The navbar button is just not appearing i don't know whats wrong.导航栏按钮只是没有出现我不知道出了什么问题。 I am sure that the code is correct i even have jquery file.我确信代码是正确的，我什至有 jquery 文件。

This is the code:这是代码：

<!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/4.1.3/css/bootstrap.min.css">
      <link rel="stylesheet" href="style.css">
      <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
      <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>
      <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"></script>
    </head>
  <body>
      <header>
          <nav class="navbar navbar-expand-md navbar-light bg-light sticky-top">
            <div class="container-fluid">
              <a class="navbar-brand" href="#"><img src="img/logo.png"></a>
              <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarResponsive">
              <span class="navbar-toggler-icon"></span>
              </button>
            </div>
          </nav>
      </header>
  </body>
</html>

Answer 1

Your code doesn't make any sense.你的代码没有任何意义。 Can you adjust this for yourself and try it?您可以自己调整一下并尝试一下吗？ The navbar toggler also needs to have a specific width value to appear.导航栏切换器还需要具有特定的宽度值才能显示。

<nav class="navbar navbar-expand-lg navbar-light bg-light">
      <a class="navbar-brand" href="#">***Your İmg Here***</a>
      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
      </button>
      <div class="collapse navbar-collapse" id="navbarNav">
        <ul class="navbar-nav">
          <li class="nav-item active">
            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Features</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Pricing</a>
          </li>
          </ul>
      </div>
    </nav>

Answer 2

You have used navbar-expand-md class in your nav element because of that your toggle is only visible in resolution smaller than 768px and for higher resolution you can use navbar-expand-lg or navbar-expand-xl classes.您在导航元素中使用了navbar-expand-md class ，因为您的切换仅在小于 768px 的分辨率下可见，并且对于更高的分辨率，您可以使用navbar-expand-lg或navbar-expand-xl类。 If you want to keep it visible in all screen just remove the class navbar-expand如果你想让它在所有屏幕上都可见，只需删除 class navbar-expand

  <body>
  <header>
      <nav class="navbar navbar-light bg-light sticky-top">
        <div class="container-fluid">
          <a class="navbar-brand" href="#"><img src="img/logo.png"></a>
          <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarResponsive">
          <span class="navbar-toggler-icon"></span>
          </button>
        </div>
      </nav>
  </header>

导航栏按钮未出现引导程序 4

问题描述

2 个解决方案

解决方案1
3 2020-04-26 18:10:06

解决方案2
1 已采纳 2020-04-26 18:20:19

导航栏按钮未出现引导程序 4

问题描述

2 个解决方案

解决方案1 3 2020-04-26 18:10:06

解决方案2 1 已采纳 2020-04-26 18:20:19

解决方案1
3 2020-04-26 18:10:06

解决方案2
1 已采纳 2020-04-26 18:20:19