js code not stored in database currectly

If you search WordPress core for < or > you will find the function _wp_specialchars in /wp-includes/formatting.php

Then if you search for _wp_specialchars you will see it is used in esc_js (as well as esc_html and esc_attr) so do not use esc_js, escaping is mostly for output anyway.

Further search results show that in /wp-includes/default-filters.php that _wp_specialchars is added to multiple filters with a priority of 30. So what you would need to do is find out which filter is being applied to your text area value before saving, so that then you can do this before saving:

remove_filter('NAME_OF_FILTER_HOOK', '_wp_specialchars', 30);

It is hard to be more specific than that without the actual code used, but this should give you enough clues to find what you need.

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