D3.js Visualization project (Need to modify my own code )

For this project I would like: (Order is in priority) 1. Sequential ordering of the code: Documentation of how create each functions flow, documenting the flow of classes created and parameters for each object (word/text file) I want to be able to have the right documentation so if someone will use this code without me, they will have a guide. 2. Make visuals generalize-able 3. Explanation of what .datum does in line 636 (also, replace with loop instead of hard-coding) 4. Explanation of what duration means in line 684 5. Popup menu displaying data for interactive features you created