How to correctly write nodejs in response to ajax request?

Question

JavaScript

In general, the task is this - you need the ability to open and resave data in a file! I used to use ajax along with php, now I want to rewrite the server part with nodejs! but for some reason it doesn't work! I'm not particularly special in the server side, please explain how to do everything right :)

here is an example

$.ajax({
        url: 'data.js',
        type: 'POST',
        data: {...}
    });

data.js:

var fs = require('fs');
fs.open("xxx.txt", "w+", 0644, function(err, file_handle) {
    if (!err) {
        fs.write(file_handle, 'xxxxxxxxxx', null, 'ascii', function(err, written) {
            if (!err) {
                fs.close(file_handle);
                console.log("Файл сохранен.");
            } else {
            }
        });
    } else {
    }
});

Answer 1

You need to raise the server first, something like this , and already write your code in the request handler