"Button Groups" in Bootstrap is a class of name "btn-group" which is used to create a series of buttons in groups (without spaces) vertically or horizontally.
Syntax: This is the basic syntax of the button group class where each button has its own class of "btn".
<div class="btn-group">
<button type="button" class="btn">Click</button>
</div>
Buttons have a default border-radius on the first and last buttons of the group.
Adding Styles on Buttons: Bootstrap allows you to add styles to your buttons using the following classes:
- .btn-default
- .btn-primary
- .btn-success
- .btn-info
- .btn-warning
- .btn-danger
- .btn-link
Example: In this example, we will create button groups using Bootstrap.
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport"
content="width=device-width, initial-scale=1">
<link rel="stylesheet"
href=
"https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<script src=
"https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js">
</script>
<script src=
"https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js">
</script>
<script src=
"https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js">
</script>
</head>
<body>
<div class="btn-group">
<button type="button" class="btn btn-danger">Click</button>
<button type="button" class="btn btn-warning">Click</button>
<button type="button" class="btn btn-success">Click</button>
</div>
</body>
</html>
Output:
Sizing of your Buttons: Bootstrap provides 4 button sizes which you can add directly to your buttons by adding an additional class of "btn-group-*" to your "btn-group" class. No need to add separate classes to each button.
All 4 sizes can be used as follows:
Example: In this example, we will size our button.
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content=
"width=device-width, initial-scale=1">
<link rel="stylesheet" href=
"https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<script src=
"https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js">
</script>
<script src=
"https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js">
</script>
<script src=
"https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js">
</script>
</head>
<body>
<div class="btn-group btn-group-lg">
<button type="button" class="btn btn-danger">Click</button>
<button type="button" class="btn btn-warning">Click</button>
<button type="button" class="btn btn-success">Click</button>
</div>
<div class="btn-group">
<button type="button" class="btn btn-danger">Click</button>
<button type="button" class="btn btn-warning">Click</button>
<button type="button" class="btn btn-success">Click</button>
</div>
<div class="btn-group btn-group-sm">
<button type="button" class="btn btn-danger">Click</button>
<button type="button" class="btn btn-warning">Click</button>
<button type="button" class="btn btn-success">Click</button>
</div>
<div class="btn-group btn-group-xs">
<button type="button" class="btn btn-danger">Click</button>
<button type="button" class="btn btn-warning">Click</button>
<button type="button" class="btn btn-success">Click</button>
</div>
</body>
</html>
Output:
Vertical Button Groups: Bootstrap also supports vertical button groups stacked in a vertical manner rather than horizontally. Use the class "btn-group-vertical" to create a vertical button group:
Example: In this example, we will create vertical button groups.
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content=
"width=device-width, initial-scale=1">
<link rel="stylesheet" href=
"https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<script src=
"https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js">
</script>
<script src=
"https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js">
</script>
<script src=
"https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js">
</script>
</head>
<body>
<div class="btn-group-vertical">
<button type="button" class="btn btn-danger">Click</button>
<button type="button" class="btn btn-warning">Click</button>
<button type="button" class="btn btn-success">Click</button>
</div>
</body>
</html>
Output:
Nesting of Buttons: Bootstrap allows you to create dropdown menus under your buttons through nesting. Add a class of "btn-group" within your main "btn-group" class to have a dropdown menu within your button:
Example: In this example, we will create a nested button.
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport"
content="width=device-width, initial-scale=1">
<link rel="stylesheet"
href=
"https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<script src=
"https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js">
</script>
<script src=
"https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js">
</script>
<script src=
"https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js">
</script>
</head>
<body>
<div class="btn-group">
<button type="button" class="btn btn-danger">Click</button>
<button type="button" class="btn btn-warning">Click</button>
<div class="btn-group">
<button type="button"
class="btn btn-success dropdown-toggle"
data-bs-toggle="dropdown"
aria-expanded="false">
Dropdown
</button>
<ul class="dropdown-menu" aria-labelledby="btnGroupDrop1">
<li><a class="dropdown-item" href="#">Item 1</a></li>
<li><a class="dropdown-item" href="#">Item 2</a></li>
</ul>
</div>
</div>
</body>
</html>
Output:
