Staging Area

The staging area is the place where modified files start being tracked and prepared to commit. In this stage you add all of those modified files that you want to prepare to be part of the repo.

In order to add a modified file to the staging area, you run:

git add name-of-file.js

If you want to add all of the modified files from the working directory into the staging area, you run:

git add .

Now, if you run git status, you will see in green all of those files added into the stagin area, and in red all of those modified files that are not in the staging area.