Thank you ABG,
But, if you be Offline, when the App is running for the first time, it is NOT work and don't display any think.
when I connect to the internet and run the app, it work correctly, after this time, (it dont need to internet to display the output. I think it will read from browser cash.
can you check it?
Even though I captured a large .js file and ran it off the Media folder, I did not bother to look in the .js file for further attempts at web connection.
A search of the .js file in Notepad++ for 'http' found references to github and verovio, so this would require more time and Javascript than I possess.
So your choices are:
Learn more Javascript and recreate humdrum in its entirely locally, or
Manually create SVG files and load them at run time from the Media folder.