An HTML program that can modify itself - a quine.
This html file stands alone and carries with it, it's own NodeJS server component. It's a self-contained portable client-and-server coupling that allows the client html to edit itself. It has it's own segment - a json object that it uses to store it's own data client-side. Then the server allows the client html file to edit itself and reload the page. This file can operate out of the file:// uri - using nodejs on localhost.
To get this to work, you can download the html client (Edit_Self_Json.html) file. Open it, then download the Edit_Self_Json.js file, run it with NodeJS. Then the html client will now become active and be allowed to change itself on-the-fly.
This file can be sent to a phone or tablet and run in "read-only" mode, but then should the mobile user want to change it, they need only send that same file to their pc and open it in "read-write" mode.
That is still very useful for the phone user. The client-side app may provide a very rich app that is read-only. Such as a viewable, printable, editable invoice. Or anything else you might want to send someone with a bit of data pre-loaded. You could send someone a barcode label that's editable with the NodeJS component.
Shows downloading the .js (NodeJS) file embedded in the html file as a data-uri downloadable JavaScript file.
Running that NodeJS file makes the above html client come alive!
