JavaScript and Ajax

Hello –

Not sure if this is the correct forum for my questions? We created a login which then pulls data after hitting submit. This has been tested in a “non-WordPress” environment. I am now testing it using WP because this is ultimately where it will go. I have a few questions.

1. I have several .JS files. Do I need to put those files in the WP file manager?

2. For Ajax to work, do I need a special plugin or anything? I have read that there is already an ajax file in the WP File Manager.

Due to privacy restrictions, I am not able to post the actual code here.

Thank you!