The disabled option is used to create a button with the disabled state. It is a boolean attribute for any button element. The disabled button means the button is inactive and it will not be active after clicking or hovering the button.
Disabled state Attribute:
- disabled: This attribute is used to create the disabled state button. This attribute makes the pointer-events: none to prevent the hover and active states from triggering.
Disabled state Class:
- .disabled: This class is used to create the disabled button.
Note: Since, <a> tag does not support the disabled attribute, so we will use the disabled class to disable the <a> element button. The disabled <a> element should include aria-disabled="true" attribute to represent the state of the element.
Syntax:
// Disabled Button
<button type="button" class="btn btn-*" disabled>
Disabled button
</button>
// Disabled Link
<a href="#" class="btn btn-* disabled" tabindex="-1"
role="button" aria-disabled="true">
Disabled link
</a>
Example 1: In this example, we will use the disabled attribute to disable the buttons.
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap 5 Buttons Disabled state</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<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 style="text-align:center;">
<div class="container mt-3">
<h1 class="text-success">
GeeksforGeeks
</h1>
<h2>Bootstrap 5 Buttons Disabled state</h2>
<h3>Disabled Buttons</h3>
<button type="button"
class="btn btn-primary" disabled>
Primary Disabled Button
</button>
<button type="button"
class="btn btn-secondary" disabled>
Secondary Disabled Button
</button>
<button type="button"
class="btn btn-success disabled">
Success Disabled Button
</button>
<button type="button"
class="btn btn-danger disabled">
Danger Disabled Button
</button>
<br><br>
<h3>Active Buttons</h3>
<button type="button"
class="btn btn-warning">
Warning Active Button
</button>
<button type="button"
class="btn btn-info">
Info Active Button
</button>
<button type="button"
class="btn btn-light">
Light Active Button
</button>
<button type="button"
class="btn btn-dark">
Dark Active Button
</button>
</div>
</body>
</html>
Output:

Example 2: In this example, we will use the .disabled class to disable the anchor link buttons.
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap 5 Buttons Disabled state</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<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 style="text-align:center;">
<div class="container mt-3">
<h1 class="text-success">
GeeksforGeeks
</h1>
<h2>Bootstrap 5 Buttons Disabled state</h2>
<h3>Disabled Links as Buttons</h3>
<a href="#" class="btn btn-primary disabled"
tabindex="-1" role="button" aria-disabled="true">
Primary Disabled link
</a>
<a href="#" class="btn btn-secondary disabled"
tabindex="-1" role="button"
aria-disabled="true">
Secondary Disabled link
</a>
<a href="#" class="btn btn-success disabled"
tabindex="-1" role="button"
aria-disabled="true">
Success Disabled link
</a>
<a href="#" class="btn btn-danger disabled"
tabindex="-1" role="button"
aria-disabled="true">
Danger Disabled link
</a>
<br><br>
<h3>Active Links as Buttons</h3>
<a href="#" class="btn btn-warning"
tabindex="-1" role="button"
aria-disabled="false">
Warning Active link
</a>
<a href="#" class="btn btn-info"
tabindex="-1" role="button"
aria-disabled="false">
Info Active link
</a>
<a href="#" class="btn btn-light"
tabindex="-1" role="button"
aria-disabled="false">
Light Active link
</a>
<a href="#" class="btn btn-dark"
tabindex="-1" role="button"
aria-disabled="false">
Dark Active link
</a>
</div>
</body>
</html>
Output:

Reference: https://getbootstrap.com/docs/5.0/components/buttons/#disabled-state