Bootstrap 5 Range Disabled cannot be focused, has a greyed-out appearance, and has no pointer events. To disable the range element, the HTML disabled attribute can be added to the range element.
Bootstrap 5 Range Disabled Classes: There is no predefined class to disable the range of Bootstrap 5, to disable range we can use the HTML disable attribute.
Bootstrap 5 Range Disabled Attribute:- disabled: This attribute is used to disable the Range.
Syntax:
<input type="range"
class="form-range" disabled
min="*"
max="*"/>
Example 1: In this example, we show a disabled element with a min value set to 0 and a max value of 10.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible"
content="IE=edge">
<meta name="viewport"
content="width=device-width, initial-scale=1.0">
<link rel="stylesheet"
href=
"https://cdn.jsdelivr.net/npm/bootstrap@5.2.2/dist/css/bootstrap.min.css"/>
</head>
<body>
<div class="container">
<div class="mt-5">
<h1 class="text-success text-center">
GeeksforGeeks
</h1>
<h4 class="text-center">
Bootstrap5 Range Disabled
</h4>
</div>
<h5 class="mt-4">
Default Range Element
</h5>
<input type="range"
class="form-range"
min="0"
max="10" />
<h5 class="mt-4">
Disabled Range Element
</h5>
<input type="range"
class="form-range"
min="0"
max="10"
disabled />
</div>
</body>
</html>
Output:

Example 2: The below example shows how to enable/disable the range element via JavaScript.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible"
content="IE=edge">
<meta name="viewport"
content="width=device-width,
initial-scale=1.0">
<link rel="stylesheet"
href=
"https://cdn.jsdelivr.net/npm/bootstrap@5.2.2/dist/css/bootstrap.min.css"/>
</head>
<body>
<div class="container">
<div class="mt-5">
<h1 class="text-success text-center">
GeeksforGeeks
</h1>
<h4 class="text-center">
Bootstrap5 Range Disabled
</h4>
</div>
<input id="range1"
type="range"
class="form-range" />
<button class="btn btn-danger mt-4"
onclick="toggleRange()">
Enable/Disable Range Element
</button>
</div>
<script>
var r = document.getElementById('range1');
function toggleRange() {
r.toggleAttribute('disabled');
}
</script>
</body>
</html>
Output:

Reference: https://getbootstrap.com/docs/5.2/forms/range/#disabled