+++
title = "hx-preserve"
+++

The `hx-preserve` attribute allows you to keep an element unchanged during HTML replacement.
Elements with `hx-preserve` set are preserved by `id` when htmx updates any ancestor element.
You *must* set an unchanging `id` on elements for `hx-preserve` to work.
The response requires an element with the same `id`, but its type and other attributes are ignored.

Note that some elements cannot unfortunately be preserved properly, such as `<input type="text">` (focus and caret position are lost), iframes or certain types of videos. To tackle some of these cases we recommend the [morphdom extension](@/extensions/morphdom-swap.md), which does a more elaborate DOM
reconciliation.

## Notes

* `hx-preserve` is not inherited