Question

我正在编写一个Web脚本来处理VPS创建和销毁。在管理页面上，我使用Twitter Bootstrap显示成功和失败消息的警报。问题在于.alert-success div工作，但.alert-error没有。我有大部分代码（减去PHP脚本），发布在 Pastebin here上。

我在Internet Explorer 11 here上有一些关于它如何找我的截图。

enter image description here

请注意，警报成功区域有效。我使用Custom Bootstrap来改变字体，但就是这样。我是使用getbootstrap.com网站创建的，所以我对此表示怀疑。

Answer 1

他们已将警报错误更改为警报危险。并且请在引导之前访问jquery，因为Felix说过.. 这在我的电脑上运行良好：

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta name="description" content="">
    <meta name="author" content="">

    <title>Theme Template for Bootstrap</title>

    <!-- Bootstrap core CSS -->
    <link href="Assets/css/bootstrap.min.css" rel="stylesheet">
        <link href="Assets/css/bootstrap-theme.min.css" rel="stylesheet">
        <style>
                HR {
                        page-break-before: always;
                        padding-bottom: 10px;
                }
        </style>
    <!-- Bootstrap theme -->
    <!-- HTML5 shim and Respond.js IE8 support of HTML5 elements and media queries -->
    <!--[if lt IE 9]>
     <script src="https://oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js"></script>
     <script src="https://oss.maxcdn.com/libs/respond.js/1.4.2/respond.min.js"></script>
   <![endif]-->
  </head>

  <body role="document">

    <!-- Fixed navbar -->
    <div class="navbar navbar-inverse navbar-fixed-top" role="navigation">
      <div class="container">
        <div class="navbar-header">
          <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
            <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="#">VZControlPanel</a>
        </div>
        <div class="navbar-collapse collapse">
          <ul class="nav navbar-nav">
            <li class="active"><a href="#">Admin</a></li>
            <li><a href="login.php">Home</a></li>
            <li><a href="#contact">Contact</a></li>
            <li class="dropdown">
              <a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <b class="caret"></b></a>
              <ul class="dropdown-menu">
                <li><a href="#">Action</a></li>
                <li><a href="#">Another action</a></li>
                <li><a href="#">Something else here</a></li>
                <li class="divider"></li>
                <li class="dropdown-header">Nav header</li>
                <li><a href="#">Separated link</a></li>
                <li><a href="#">One more separated link</a></li>
              </ul>
            </li>
          </ul>
        </div><!--/.nav-collapse -->
      </div>
    </div>

    <div class="container theme-showcase" role="main">

      <!-- Main jumbotron for a primary marketing message or call to action -->
      <div class="jumbotron">
        <h1>Admin Summary</h1>
        <p>NODE STATUS: 1 nodes online.</p>
      </div>

        <?php
        $success=0;
          if($success===1) {
      echo '<div class="alert alert-success">';
       echo '<strong>SUCCESS:</strong> Action completed successfully!';
           echo '<a class="close" data-dismiss="alert">×</a>';
       echo '</div>';
          } else if($success===0) {
           echo '<div class="alert alert-danger">';
       echo "<strong>FAILED:</strong> Action didn't complete successfully!";
           echo '<a class="close" data-dismiss="alert">×</a>';
       echo '</div>';

          }
    ?>
    <hr>
                <h2>Create VM</h2>
                <form action="admin.php" method="get">
                        <input name="action" value="create" type="hidden">
                        VMID: <input name="id" type="text"><br>
                        IP: <input name="ip" type="text"><br>
                        OS Template: <input name="os" type="text"><br>
                        NodeID: <input name="nid" type="text"><br>
                        Assign To: <input name="user" type="text"><br>
                        <input name="submit" value="Create VM" type="submit">
                </form>
        <hr>
                <h2>Destroy VM</h2>
                <form action="admin.php" method="get">
                        <input name="action" value="destroy" type="hidden">
                        VMID: <input name="id" type="text"><br>
                        NodeID: <input name="nid" type="number" maxlength="3"><br>
                        <input name="submit" type="submit" value="Destroy VM">
                </form>
    </div> <!-- /container -->
    <!-- Bootstrap core JavaScript
   ================================================== -->
    <!-- Placed at the end of the document so the pages load faster -->

    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
    <script src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
  </body>
</html>

Answer 2

看起来你正在使用Bootstrap 3.他们已经将类名从alert-error更改为alert-danger。

所以，您可能想要的是课程alert-danger和不 alert-error（其版本2.x ）。

Answer 3

基于你的pastebin，你需要颠倒你所包含的脚本的顺序，你需要首先包含jQuery然后引导程序，因为Bootstrap需要jQuery才能工作，所以你可以改变：

<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>

为：

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>

Bootstrap - 警报错误不起作用

3 个答案: