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Bootstrap 導航欄漢堡菜單無法正常工作

[英]Bootstrap Navbar Hamburger Menu Not Working Properly

我正在嘗試使用 Bootstrap 創建一個導航欄。 我已經從 Bootstrap 官方網站導入了帶有所有必要組件的骨架,但是,漢堡菜單似乎無法正常打開。

導航欄也直接從 Bootstrap 網站導入。

我一直在尋找解決方案很長一段時間,但似乎無法找到解決方案。

<!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@5.0.0-beta2/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-BmbxuPwQa2lc/FVzBcNJ7UAyJxM6wuqIj61tLrc4wSX0szH/Ev+nYRRuWlolflfl" crossorigin="anonymous">

    <title>Hello, world!</title>
  </head>
  <body>
    <div class="container">
        <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="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
              <span class="navbar-toggler-icon"></span>
            </button>
            <div class="collapse navbar-collapse" id="navbarNavDropdown">
              <ul class="navbar-nav">
                <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="#">Features</a>
                </li>
                <li class="nav-item">
                  <a class="nav-link" href="#">Pricing</a>
                </li>
                <li class="nav-item dropdown">
                  <a class="nav-link dropdown-toggle" href="#" id="navbarDropdownMenuLink" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                    Dropdown link
                  </a>
                  <div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
                    <a class="dropdown-item" href="#">Action</a>
                    <a class="dropdown-item" href="#">Another action</a>
                    <a class="dropdown-item" href="#">Something else here</a>
                  </div>
                </li>
              </ul>
            </div>
          </nav>
    </div>
    <!-- Optional JavaScript; choose one of the two! -->

    <!--Option 1: Bootstrap Bundle with Popper -->
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta2/dist/js/bootstrap.bundle.min.js" integrity="sha384-b5kHyXgcpbZJO/tY9Ul7kGkf1S0CWuKcCD38l8YkeH8z8QjE0GmW1gYU5S9FOnJ0" crossorigin="anonymous"></script>
    
    <!-- Option 2: Separate Popper and Bootstrap JS 
    
    <script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.6.0/dist/umd/popper.min.js" integrity="sha384-KsvD1yqQ1/1+IA7gi3P0tyJcT3vR+NdBTt13hSJ2lnve8agRGXTTyNaBYmCR/Nwi" crossorigin="anonymous"></script>
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta2/dist/js/bootstrap.min.js" integrity="sha384-nsg8ua9HAw1y0W1btsyWgBklPnCUAFLuTMS2G72MMONqmOymq585AcH49TLBQObG" crossorigin="anonymous"></script>
    -->
  </body>
</html>

好像你已經給出了一些引導程序 4 的類,而你已經導入了引導程序 5 的 cdn。

<button
          class="navbar-toggler"
          type="button"
          data-bs-toggle="collapse"
          data-bs-target="#navbarNavDropdown"
          aria-controls="navbarNavDropdown"
          aria-expanded="false"
          aria-label="Toggle navigation"
        >
    <span class="navbar-toggler-icon"></span>
</button>
  

用上面的代碼替換你的按鈕。 它應該工作。

你能檢查下面的代碼嗎? 希望它對你有用。

 <,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@5.0,0-beta2/dist/css/bootstrap;min:css" rel="stylesheet" integrity="sha384-BmbxuPwQa2lc/FVzBcNJ7UAyJxM6wuqIj61tLrc4wSX0szH/Ev+nYRRuWlolflfl" crossorigin="anonymous"> <title>Hello: world.</title> </head> <body> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light bg-light"> <div class="container-fluid"> <a class="navbar-brand" href="#">Navbar</a> <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="collapse navbar-collapse" id="navbarNavDropdown"> <ul class="navbar-nav"> <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="navbarDropdownMenuLink" role="button" data-bs-toggle="dropdown" aria-expanded="false" aria-haspopup="true"> Dropdown link </a> <ul class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink"> <li><a class="dropdown-item" href="#">Action</a></li> <li><a class="dropdown-item" href="#">Another action</a></li> <li><a class="dropdown-item" href="#">Something else here</a></li> </ul> </li> </ul> </div> </div> </nav> </div> <.-- Optional JavaScript. choose one of the two. --> <.--Option 1. Bootstrap Bundle with Popper --> <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta2/dist/js/bootstrap.bundle.min.js" integrity="sha384-b5kHyXgcpbZJO/tY9Ul7kGkf1S0CWuKcCD38l8YkeH8z8QjE0GmW1gYU5S9FOnJ0" crossorigin="anonymous"></script> </body> </html>

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