Bootstrap 5 Dropdowns Dropleft is used to open the dropdown on the left-hand side of the user. Dropdown menus can be set up to the left of the elements by adding .dropstart to the parent element.
Bootstrap 5 Dropdowns Dropleft Class:
- dropstart: This class is used to launch dropdown menus to the right of the button.
Syntax:
<div class="btn-group dropstart">
<button type="button"
class="btn dropdown-toggle"
data-bs-toggle="dropdown">
...
</button>
<ul class="dropdown-menu">
<li>...</li>
</ul>
</div>
Note: In both the example we will use a float-end class so the dropstart can be easily visible.
Example 1: In this example, we will learn about a Dropdown Dropleft.
<!DOCTYPE html>
<html>
<head>
<link href=
"https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css"
rel="stylesheet"
integrity=
"sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC"
crossorigin="anonymous">
<script src=
"https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js"
integrity=
"sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM"
crossorigin="anonymous">
</script>
</head>
<body>
<div class="container">
<h1 class="text-success">
GeeksforGeeks
</h1>
<h2>Bootstrap 5 Dropdowns Dropleft</h2>
<div class="btn-group dropstart float-end">
<button type="button"
class="btn-success dropdown-toggle
dropdown-toggle-split"
data-bs-toggle="dropdown"
data-bs-display="static"
aria-expanded="false">
Select Course from GeeksforGeeks - DropStart
</button>
<div class="dropdown-menu dropdown-menu-end ">
<a class="dropdown-item" href="#">
C Programming
</a>
<a class="dropdown-item" href="#">
C++ Programming
</a>
<a class="dropdown-item" href="#">
Java Programming
</a>
</div>
</div>
</div>
</body>
</html>
Output

Example 2: In this example, we will learn about a Dropdown Dropleft using a split button
<!DOCTYPE html>
<html>
<head>
<link href=
"https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css"
rel="stylesheet"
integrity=
"sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC"
crossorigin="anonymous">
<script src=
"https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js"
integrity=
"sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM"
crossorigin="anonymous">
</script>
</head>
<body>
<div class="container">
<h1 class="text-success">
GeeksforGeeks
</h1>
<h2>Bootstrap 5 Dropdowns Dropleft</h2>
<div class="btn-group dropstart float-end" role="group">
<button type="button"
class="btn btn-success dropdown-toggle
dropdown-toggle-split"
data-bs-toggle="dropdown" aria-expanded="false">
</button>
<div class="dropdown-menu dropdown-menu-end ">
<a class="dropdown-item" href="#">
C Programming
</a>
<a class="dropdown-item" href="#">
C++ Programming
</a>
<a class="dropdown-item" href="#">
Java Programming
</a>
</div>
<button type="button" class="btn btn-success">
Split Button
</button>
</div>
</div>
</body>
</html>
Output

Reference: https://getbootstrap.com/docs/5.0/components/dropdowns/#dropleft