what's the reason of not working dropdown bootstrap component in browser?-CodePudding

I used the same code that exist in bootstrap site but drop down-item doesn't work. the toggle is showed but it's item no.

what's the reason of not working dropdown bootstrap component in browser ? Is there any problem in my CDNs?

<head>
  <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
</head>

<body>
  <nav >
    <div >
      <a  href="#">Navbar</a>
      <button  type="button" data-bs-toggle="collapse" data-bs-target="#navbarNavDarkDropdown" aria-controls="navbarNavDarkDropdown" aria-expanded="false" aria-label="Toggle navigation">
            <span ></span>
          </button>
      <div  id="navbarNavDarkDropdown">
        <ul >
          <li >
            <a  href="#" id="navbarDarkDropdownMenuLink" role="button" data-bs-toggle="dropdown" aria-expanded="false">
                  Dropdown
                </a>
            <ul  aria-labelledby="navbarDarkDropdownMenuLink">
              <li><a  href="#">Action</a></li>
              <li><a  href="#">Another action</a></li>
            </ul>
          </li>
        </ul>
      </div>
    </div>
  </nav>

  <script src="https://cdn.jsdelivr.net/npm/@popperjs/[email protected]/dist/umd/popper.min.js" integrity="sha384-IQsoLXl5PILFhosVNubq5LC7Qb9DXgDA9i tQ8Zj3iwWAwPtgFTxbJ8NT4GN1R8p" crossorigin="anonymous"></script>
  <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.min.js" integrity="sha384-cVKIPhGWiC2Al4u LWgxfKTRIcfu0JTxR EQDz/bgldoEyl4H0zUF0QKbrJ0EcQF" crossorigin="anonymous"></script>
  <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP JcXn/tWtIaxVXM" crossorigin="anonymous"></script>

</body>

</html>

CodePudding user response：

As it was suggested in the comment above, you need to remove some CDNs.

See the snippet below.

<html>

<head>
  <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
</head>

<body>
  <nav >
    <div >
      <a  href="#">Navbar</a>
      <button  type="button" data-bs-toggle="collapse" data-bs-target="#navbarNavDarkDropdown" aria-controls="navbarNavDarkDropdown" aria-expanded="false" aria-label="Toggle navigation">
          <span ></span>
        </button>
      <div  id="navbarNavDarkDropdown">
        <ul >
          <li >
            <a  href="#" id="navbarDarkDropdownMenuLink" role="button" data-bs-toggle="dropdown" aria-expanded="false">
                Dropdown
              </a>
            <ul  aria-labelledby="navbarDarkDropdownMenuLink">
              <li><a  href="#">Action</a></li>
              <li><a  href="#">Another action</a></li>
            </ul>
          </li>
        </ul>
      </div>
    </div>
  </nav>
  <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP JcXn/tWtIaxVXM" crossorigin="anonymous"></script>

</body>

</html>

CodePudding user response：

Dear I Developer, I checked your code very Calmly and After all, I debug it very properly. Actually, its not any big error but time taking to debug, The real error is that you put the Wrong js links in script tags, I attached the correct code after debugging the code. `

<head>
  <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
</head>

<body>
  <nav >
    <div >
      <a  href="#">Navbar</a>
      <button  type="button" data-bs-toggle="collapse" data-bs-target="#navbarNavDarkDropdown" aria-controls="navbarNavDarkDropdown" aria-expanded="false" aria-label="Toggle navigation">
            <span ></span>
          </button>
      <div  id="navbarNavDarkDropdown">
        <ul >
          <li >
            <a  href="#" id="navbarDarkDropdownMenuLink" role="button" data-bs-toggle="dropdown" aria-expanded="false">
                  Dropdown
                </a>
            <ul  aria-labelledby="navbarDarkDropdownMenuLink">
              <li><a  href="#">Action</a></li>
              <li><a  href="#">Another action</a></li>
            </ul>
          </li>
        </ul>
      </div>
    </div>
  </nav>

  <script src="https://cdn.jsdelivr.net/npm/@popperjs/[email protected]/dist/umd/popper.min.js" integrity="sha384-IQsoLXl5PILFhosVNubq5LC7Qb9DXgDA9i tQ8Zj3iwWAwPtgFTxbJ8NT4GN1R8p" crossorigin="anonymous"></script>
  <script 
<!-- JavaScript Bundle with Popper -->
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" integrity="sha384-OERcA2EqjJCMA /3y gxIOqMEjwtxJY7qPCqsdltbNJuaOe923 mo//f6V8Qbsw3" crossorigin="anonymous"></script>      <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP JcXn/tWtIaxVXM" crossorigin="anonymous">
</script>

</body>

</html>

`Now its working 100% properly.