Where to find pre-made javascripts for unity please?

I am searching to find out various usage of pre-made javascripts for unity. I hope I should be able to modify them and use them in my projects without any copyright issues. I went though google and other search engines but I am looking for javascripts bank(s).

Much appreciated for your responses.

Normally here: unifycommunity.com

You can also scan (google) the Forums, there are a lot of scripts embedded there.

You can also check out the Asset Store. There are tons of starter kits that can help out, that usually come with scripts you can use or modify.