Bitrix fall off JS events on the site?

Question

1C-Bitrix

Good day to all! A number of buttons with the same handler do not work on the site . If you go to the code inspector, you can see that there are no events on these buttons:

At the same time, if you clear the cache on the site, everything starts working and events are again hung on the buttons:

but exactly until the page is reloaded, then everything falls off again.
The handler script is cut directly in the template via Asset::getInstance()->addJs, and after the first load it stops loading.
I thought about the composite, but disabling it on the site did not lead to a correction of the situation. Pliz tell me what could be wrong?!??
Thank you all in advance)

Answer 1

As already noted by no_one_safe - using "Asset::getInstance()->addJs" is only useful in those parts of the code that are not subject to any kind of caching. Use the component_epilog.php of your component. In the JS component itself, the code is connected using the "addExternalJs" method. Link to bitrix info Click