I am trying to create a dropdown using Bootstrap with several options but when I click the button nothing comes down to select the option. Not sure what is going on.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>A Basic HTML5 Template</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0/dist/css/bootstrap.min.css" rel="stylesheet" >
<script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.9.2/dist/umd/popper.min.js" ></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.1/dist/js/bootstrap.min.js" integrity="sha384-Atwg2Pkwv9vp0ygtn1JAojH0nYbwNJLPhwyoVbhoPwBhjQPR5VtM2+xf0Uwh9KtT" crossorigin="anonymous"></script>
</head>
<body>
<div class="dropdown">
<button class="btn btn-secondary dropdown-toggle" type="button" id="SelectOS" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"> Select option...</button>
<div class="dropdown-menu" aria-labelledby="SelectOS">
<a class="dropdown-item" href="#">Linux</a>
<a class="dropdown-item" href="#">Mac</a>
<a class="dropdown-item" href="#">Windows</a>
</div>
</div>
</body>
</html>
Use the data-bs-toggle attribute instead of the data-toggle attribute.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>A Basic HTML5 Template</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0/dist/css/bootstrap.min.css" rel="stylesheet">
<script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.9.2/dist/umd/popper.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.1/dist/js/bootstrap.min.js" integrity="sha384-Atwg2Pkwv9vp0ygtn1JAojH0nYbwNJLPhwyoVbhoPwBhjQPR5VtM2+xf0Uwh9KtT" crossorigin="anonymous"></script>
</head>
<body>
<div class="dropdown">
<button class="btn btn-secondary dropdown-toggle" type="button" id="SelectOS" data-bs-toggle="dropdown" aria-haspopup="true" aria-expanded="false"> Select option...</button>
<div class="dropdown-menu" aria-labelledby="SelectOS">
<a class="dropdown-item" href="#">Linux</a>
<a class="dropdown-item" href="#">Mac</a>
<a class="dropdown-item" href="#">Windows</a>
</div>
</div>
</body>
</html>