How to achieve minimal effort to write from the browser to the json file?

Question

Backend

Bekend is a dark forest for me. I'm making a small html and js application for my own needs. Something like a special diary that meets exactly my requirements. But my problem is that I don't know how to make an entry in JSON. I have an object in js and I need it to be written to a file on my computer with a JSON extension. I know how to read a file with ajax, but I didn't have to write anything to it.
Please suggest a solution to my question. Preferably, the simplest one, which requires as little back-end knowledge as possible. I write the front in js, if you can’t solve the problem with native js, then at least with node.js.

Answer 1

To store the state of the client application without using the backend, it is enough to use localStorage .