javascript

this JavaScript conceived in order to save time with data savings is not working, why?

button for resetting all the custom meta fields

I did not support this because of the difficulty of implementation. However, Gutenberg is made with ReactJS, and a slot called PluginPostStatusInfo is provided, so it seems possible to inject your own React elements by using this slot. https://github.com/WordPress/gutenberg/blob/trunk/docs/reference-guides/slotfills/plugin-post-status-info.md