Unable to find js directory?
If you want to make some changes in theme's core file and not able to locate that file then this doc will help you.
Suppose you want to edit zerif.js then there are two easy method to find it.
1) You can edit js file through FTP.Open your Theme directory (through FTP) > js directory. Download your zerif.js file from there, Edit it, Then again upload it at the same location.
2) Download Wp Editor plugin and activate in your dashboard. Navigate to Appearance > Theme Editor, you can check that now all sub folders are also available there. Now go to js folder and edit zerif.js from there.
Are you facing any issue with this process? If you are then feel free to start a new thread at our forums.