To enable Bootstrap tooltip on disabled button with HTML, we wrap the disabled button with a wrapper element.
For instance, we write
<div class="tooltip-wrapper" data-title="hello world">
<button class="btn btn-default" disabled>button disabled</button>
</div>
to wrap a div with the data-title attribute with the tooltip text with class tooltip-wrapper around the disabled button to show the tooltip when hovering over the disabled button.
