Question

        <html>
<head>
    <title>Advertisements</title>
    <link rel="stylesheet" href="assets/css/bootstrap.css">
    <link rel="stylesheet" href="assets/css/style.css">
</head>
<body>
    <nav class="navbar navbar-default">
      <div class="container">
        <div class="navbar-header">
          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
            <span class="sr-only">Toggle navigation</span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </button>
          <a class="navbar-brand" href="#">Advertisements</a>
        </div>
        <div id="navbar" class="collapse navbar-collapse">
          <ul class="nav navbar-nav">
            <li><a href="<?php echo ROOT_URL; ?>">Home</a></li>
            <li><a href="<?php echo ROOT_URL; ?>advertisements">Advertisements</a></li>
            <li><a href="<?php echo ROOT_URL; ?>users">Users</a></li>
          </ul>

        </div><!--/.nav-collapse -->
      </div>
    </nav>

    <div class="container">

     <div class="row">
        <?php require($view); ?>
     </div>

    </div><!-- /.container -->
</body>
</html>

它应该创建一个带设计的导航栏，但只显示计划文本。我有两个样式表，它正在另一个项目中工作。我复制了所有请求的文件，链接也正常工作。我可以访问其他页面但是我的样式表都没有工作（就像在这种情况下一样。）为什么会这样？

Answer 1

确保在标题中添加bootstrap.js文件并把这段代码

<nav class="navbar navbar-expand-lg navbar-light bg-light">
  <a class="navbar-brand" href="#">Navbar</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>

  <div class="collapse navbar-collapse" id="navbarSupportedContent">
    <ul class="navbar-nav mr-auto">
      <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="#">Link</a>
      </li>
      <li class="nav-item dropdown">
        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
          Dropdown
        </a>
        <div class="dropdown-menu" aria-labelledby="navbarDropdown">
          <a class="dropdown-item" href="#">Action</a>
          <a class="dropdown-item" href="#">Another action</a>
          <div class="dropdown-divider"></div>
          <a class="dropdown-item" href="#">Something else here</a>
        </div>
      </li>
      <li class="nav-item">
        <a class="nav-link disabled" href="#">Disabled</a>
      </li>
    </ul>
    <form class="form-inline my-2 my-lg-0">
      <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
      <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
    </form>
  </div>
</nav>

有关详细信息，请查看此Bootstrap Components

Bootstrap导航栏无法正常工作。为什么？

1 个答案: