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移动按钮不起作用(引导程序)

[英]Mobile Button Not Working (Bootstrap)

我正在使用jQuery和Bootstrap。 如以下html所述,移动按钮不会展开。 我已经在这个网站上检查过有关确认数据目标的信息,但没有运气。 这是我的代码,

<!DOCTYPE html>
<html lang="en">

<head>
<meta charset="utf-8">
  <title>name</title>
<meta name="description" content="name">
<meta content="IE=edge" http-equiv="X-UA-Compatible">
<meta content="width=device-width,initial-scale=1" name="viewport">

<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">

<link rel="stylesheet" href="css/main.css">
</head>

<body>

<!-- Navbar -->
<nav class="navbar navbar-default navbar-fixed-top" role="navigation">
  <div class="container">
    <div class="navbar-header"> <!-- 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"> name </a>
    </div> <!-- End Navbar Header -->

    <div class="collapse navbar-collapse navbar-right" id="navbar">
      <ul class="nav navbar-nav">
        <li><a href="lastName_OnlineSummary.pdf">PDF</a></li>
        <li><a href="https://www.linkedin.com/in/username/">LinkedIn</a></li>
        <li><a href="https://github.com/username">GitHub</a></li>
        <li><a href="mailto:username@users.github.com">Contact</a></li> 
      </ul>
    </div> <!-- End Navbar-collapse -->
  </div>  <!-- End Container -->
</nav> <!-- End Navbar -->

<!-- ... -->

<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>

<script type='text/javascript' src="//ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>

</body>
</html>

您必须在jQuery之后加载Bootstrap脚本。 这是因为Bootstrap依赖于jQuery,并且必须首先加载该脚本,因此Bootstrap的脚本可以使用它。 像这样:

<script type='text/javascript' src="//ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>

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