How to create JSON file in project directory using JS?

Question

JavaScript

There is an html file and the position of the phone is tracked there (x, y, z) and there is a JSON file that looks like this:

{
    "x":"",
    "y":"",
    "z":""
}

So, with the help of js, you need to write x, y and z variables in json in real time.
That is, there are variables x, y and z and you need to constantly write them to the json file in real time.
I tried different scripts from the Internet, but a file is created everywhere, then text is written to it, but this file needs to be downloaded, but I need it to be created in the directory.

Maybe someone knows how to do it (*Without Node JS*)?

Answer 1

So you want to create a file on the server using the language for the browser? For such masochists they came up with a whole software - node js

Answer 2

No way. Do you want every site to be able to write any file to your computer?

Answer 3

Alas, JS does not have access to the file system.