Why doesn't Jquery work in the connected script (1s Bitrix)?

Question

JavaScript

There is a script - the output agent of the form.
Put it in a separate folder.
I'm trying to connect it in the header.php template in different ways using the 1c bitrix documentation.
I tried to connect it as an external js and using Asset::getInstance()->addJs(SITE_TEMPLATE_PATH . "/js/fix.js");
and through $APPLICATION
All the same - the script was connected - but jquery did not work.
If you push the script into the header in the forehead, everything works, but you can’t do this.
Tell me, please, why jquery can not be processed when the script is "correctly" connected using bitrix?

Answer 1

$APPLICATION->AddHeadScript(SITE_TEMPLATE_PATH.'/js/fix.js');