Reputation: 11
how can I make the dropdown menu to expand upwards instead of downwards?
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
</head>
<body>
<br>
<div class="container">
<button type="button" class="btn btn-primary dropdown-toggle" data-toggle="dropdown">
COLOR
</button>
<div class="dropdown-menu">
<a class="dropdown-item" href="#">red</a>
<a class="dropdown-item" href="#">yellow</a>
</div>
</div>
</body>
</html>
I expect the dropdown menu to expand upwards instead of downwards but the actual output is, the dropdown menu shows downward.
Upvotes: 0
Views: 1410
Reputation: 3323
Here is a bootstrap solution
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
</head>
<body>
<br>
<br>
<br>
<br>
<div class="container">
<div class="btn-group dropup">
<button type="button" class="btn btn-primary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
COLOR
</button>
<div class="dropdown-menu">
<a class="dropdown-item" href="#">red</a>
<a class="dropdown-item" href="#">yellow</a>
</div>
</div>
</div>
</body>
</html>
Upvotes: 1
Reputation: 15031
if the button is the only thing on your page, and I suspect that from your code, the dropup wouldn't work... so check the code below and try removing the H1 and p tags...
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
<div class="container">
<h1> This is demo text </h1>
<p>There needs to be some text... else it won't open up</p>
<div class="dropup">
<button type="button" class="btn btn-primary dropdown-toggle" data-toggle="dropdown">
COLOR
</button>
<div class="dropdown-menu">
<a class="dropdown-item" href="#">red</a>
<a class="dropdown-item" href="#">yellow</a>
</div>
</div>
</div>
Upvotes: 1