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我在使用 Bootstrap 时遇到了一个小问题。每次我展开我的菜单（汉堡图标）时，我尝试关闭它后它都不会折叠。您能否让我知道我哪里出了问题以及我可以做些什么来避免将来出现这个问题，谢谢。

    <body>
              <nav id="mainNavBar" class="navbar navbar-expand-md navbar-dark bg-dark">
                <a class="navbar-brand" href="#">CANDY</a>
                <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navLinks"
                  aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
                  <span class="navbar-toggler-icon"></span>
                </button>

        
                <div class="collapse navbar-collapse" id="navLinks">
        
                  <ul class="navbar-nav">
                    <li class="nav-item">
                      <a class="nav-link" aria-current="page" href="#">HOME</a>
                    </li>
                    <li class="nav-item">
                      <a class="nav-link" href="#">ABOUT</a>
                    </li>
                    <li class="nav-item">
                      <a class="nav-link" href="#">TICKETS</a>
                    </li>
        
                  </ul>
    
                </div>
              </nav>`
</body>
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1 回答 1

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强调文本

<!doctype html>
<html lang="en">
   <head>
      <!-- Required meta tags -->
      <meta charset="utf-8">
      <meta name="viewport" content="width=device-width, initial-scale=1">
      <!-- Bootstrap CSS -->
      <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
      <title>Hello, world!</title>
   </head>
   <body>
      <nav id="mainNavBar" class="navbar navbar-expand-md navbar-dark bg-dark">
         <a class="navbar-brand" href="#">CANDY</a>
         <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navLinks"
            aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
         <span class="navbar-toggler-icon"></span>
         </button>
         <div class="collapse navbar-collapse" id="navLinks">
            <ul class="navbar-nav">
               <li class="nav-item">
                  <a class="nav-link" aria-current="page" href="#">HOME</a>
               </li>
               <li class="nav-item">
                  <a class="nav-link" href="#">ABOUT</a>
               </li>
               <li class="nav-item">
                  <a class="nav-link" href="#">TICKETS</a>
               </li>
            </ul>
         </div>
      </nav>
      `
      <!-- Optional JavaScript; choose one of the two! -->
      <!-- Option 1: Bootstrap Bundle with Popper -->
      <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p" crossorigin="anonymous"></script>
      <!-- Option 2: Separate Popper and Bootstrap JS -->
      <!--
         <script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.10.2/dist/umd/popper.min.js" integrity="sha384-7+zCNj/IqJ95wo16oMtfsKbZ9ccEh31eOz1HGyDuCQ6wgnyJNSYdrPa03rtR1zdB" crossorigin="anonymous"></script>
         <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.min.js" integrity="sha384-QJHtvGhmr9XOIpI6YVutG+2QOK9T+ZnN4kzFN1RtK3zEFEIsxhlmWl5/YESvpZ13" crossorigin="anonymous"></script>
         -->
   </body>
</html>

我试了一下，效果很好。确保您使用的是正确的引导程序版本。

于 2021-10-13T12:40:06.687 回答