How i can send to a txt.file the content that is in my ul tables

Hi. I have opened before a month a discussion about this but Now i know the basics of node so its should be more straight forward.

I have a project which i already builted. I have a 2 tables in the project. 1 table is for active tools that already got taken and the other table is for the tools that has been returned with the date. I save all the data in the localStorage.

I want to create some feature which sends the existing rows in the logs table to a txt file when i press on "delete logs", which basically clean the table and removed the data of the localstorage.

this is the current snapshot: https://w.trhou.se/oanaaidb18

I already created a basic server and a file called render.js which holds 2 functions, 1 for reading a file and another fucntion for writing to a txt file.

Both functions are working, I tried to read from the index.html the html markup and then to write it into the temps.txt file and it worked.

But i dont really know how to implement this in my project. The mainapp.js is responsible for all the frontend stuff which is adding a tool, removing a tool and save it to localStorage.

anyone have any ideas or guides to this? i will appreciate any help

Steven Parker