Show hover tooltips and click/focus popovers — both require bootstrap.Tooltip/Popover() init.
Tooltips and Popovers
<!-- Tooltips -- must be initialized via JS -->
<button class="btn btn-secondary"
data-bs-toggle="tooltip"
data-bs-placement="top"
title="This is a tooltip">
Hover me
</button>
<!-- Initialize all tooltips -->
<script>
const tooltips = document.querySelectorAll("[data-bs-toggle=tooltip]");
tooltips.forEach(el => new bootstrap.Tooltip(el));
</script>
<!-- Popover (bigger tooltip with title and content) -->
<button class="btn btn-danger"
data-bs-toggle="popover"
data-bs-title="Delete Item"
data-bs-content="This action cannot be undone."
data-bs-trigger="focus">
Click me
</button>
<!-- Initialize popovers -->
<script>
document.querySelectorAll("[data-bs-toggle=popover]")
.forEach(el => new bootstrap.Popover(el));
</script>