Bulma is a free and open-source CSS framework used for making beautiful and responsive websites. It is based on flexbox. In this article, we will be seeing how to make a dropup in Bulma.
Dropup is just like a dropdown but it opens upwards. To convert a dropdown to dropup you just have to add the is-up modifier to the dropdown component.
Bulma Dropup classes:
- is-up: This class is used on the dropdown component to make it open upwards.
Syntax:
<div class="dropdown is-up">
...
</div>Example: The below example illustrates the use of the is-up class to make a dropup in Bulma.
<!DOCTYPE html>
<html>
<head>
<title>Bulma Dropup</title>
<link rel='stylesheet'
href=
'https://cdn.jsdelivr.net/npm/bulma@0.9.3/css/bulma.min.css'>
<link rel="stylesheet"
href=
"https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0-beta3/css/all.min.css" />
<style>
.container>p{
margin-top: 30px;
}
</style>
</head>
<body class="has-text-centered">
<h1 class="is-size-2 has-text-success">
GeeksforGeeks
</h1>
<b class="is-size-4">
Bulma Dropup
</b>
<div class="container is-fluid">
<p><b>Normal Dropdown:</b></p>
<div class="dropdown">
<div class="dropdown-trigger">
<button class="button"
aria-controls="dropdown-menu1">
<span>Select a topic</span>
<span class="icon is-small">
<i class="fas fa-angle-down"></i>
</span>
</button>
</div>
<div class="dropdown-menu"
id="dropdown-menu1"
role="menu">
<div class="dropdown-content">
<div class="dropdown-item">
<p>Algorithms</p>
</div>
<div class="dropdown-item">
<p>DBMS</p>
</div>
<div class="dropdown-item">
<p>Data Structures</p>
</div>
</div>
</div>
</div>
<p><b>Dropdown with <i>is-up</i> modifier:</b></p>
<div class="dropdown is-up">
<div class="dropdown-trigger">
<button class="button"
aria-controls="dropdown-menu1">
<span>Select a topic</span>
<span class="icon is-small">
<i class="fas fa-angle-up"></i>
</span>
</button>
</div>
<div class="dropdown-menu"
id="dropdown-menu1"
role="menu">
<div class="dropdown-content">
<div class="dropdown-item">
<p>Algorithms</p>
</div>
<div class="dropdown-item">
<p>DBMS</p>
</div>
<div class="dropdown-item">
<p>Data Structures</p>
</div>
</div>
</div>
</div>
</div>
<script>
var triggers = document.querySelectorAll(
".dropdown .dropdown-trigger");
triggers.forEach(function (trigger) {
var isopen = false;
trigger.addEventListener('click', function(){
if(isopen){
trigger.parentElement.classList.remove("is-active");
isopen = false;
}else{
trigger.parentElement.classList.add("is-active");
isopen = true;
}
})
});
</script>
</body>
</html>
Output:
Reference: https://bulma.io/documentation/components/dropdown/#dropup
