css - 附加 CSS、JS、Bootstrap CDN 版本后，只有一个文件未正确呈现

Question

取决于我在 <header> 中附加的库，内容的呈现在特定页面上有所不同。 这个错误与版本有关吗？还是别的？

1) 这会禁用页面 A 中的下拉框，但呈现页面 B 的内容样式

<!-- Bootstrap css 4.4.0 -->
      <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css"
      integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<!-- Bootstrap theme 4.4.0-->
      <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous">
<!-- Font Awesome -->
      <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/css/font-awesome.min.css">
<!-- Main CSS -->
      <link rel="stylesheet" href="css/main.css">
<!-- Favicon -->
      <link rel="icon" href="favicon.ico"/>
<!-- jQuery 2.2.4 -->
      <script src="https://code.jquery.com/jquery-2.2.4.min.js"
        integrity="sha256-BbhdlvQf/xTY9gja0Dq3HiwQF8LaCRTXxZKRutelT44="
        crossorigin="anonymous"></script>
<!-- Bootstrap Javascript 4.0.0 -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"
        integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl"
        crossorigin="anonymous"></script>

<!-- THE DIFFERENCE IS FROM HERE --> 

<!-- 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>

2) 这会在页面 A 中启用下拉框，但会为页面 B 呈现无样式的内容

<!-- Bootstrap css 4.4.0 -->
      <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css"
      integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<!-- Bootstrap theme 4.4.0-->
      <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous">
<!-- Font Awesome -->
      <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/css/font-awesome.min.css">
<!-- Main CSS -->
      <link rel="stylesheet" href="css/main.css">
<!-- Favicon -->
      <link rel="icon" href="favicon.ico"/>
<!-- jQuery 2.2.4 -->
      <script src="https://code.jquery.com/jquery-2.2.4.min.js"
        integrity="sha256-BbhdlvQf/xTY9gja0Dq3HiwQF8LaCRTXxZKRutelT44="
        crossorigin="anonymous"></script>
<!-- Bootstrap Javascript 4.0.0 -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"
        integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl"
        crossorigin="anonymous"></script>

<!-- THE DIFFERENCE IS FROM HERE -->

<!-- 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">
<!-- 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>

我怎样才能对库进行更改，使两者都能正常工作？

(1) enable drop-down box in Page A (2) render the content on Page B styled

提前致谢:)

Answer 1

我能够自己解决这个问题。 这就是我解决这个问题的方法。

将 jquery 库放在第一个， 然后，在文件末尾附加 css 和 js 的 Bootstrap 库。