jquery.1.12.4.min.js is a stayable version of jQuery which is required to place upon all scripts otherwise none of the jquery code will work.
bootstrat-min.js is used as the core of this template. It is a widely used resouce in today’s era. Used to make this template responsive and providing all main classes for ui and also provides scripts that helped to form these templates.
contact-form.js is a jQuery plugin used for contact form data validation.
swiper-bundle-min.js is a jQuery plugin used for slider.
main.js is a custom jQuery used for active all jQuery file.