This example sets up a dedicated worker in each window that is opened and sets up communication directly between the web worker in the primary window and each web worker in the secondary window.
This allows for high data throughput between the workers without putting any load on the main window js that relies on the UI.
There is also logic in there to close all windows when the primary window is closed.
To run this demo you will need to host the files in your own web server as the example will not work by just opening the html file in the browser.
Once the webserver is running just navigate to the index.html
To know that it is working you should see messages 'fromChild' in the primary window and 'fromParent' in the secondary windows.
There is quite a bit of extra logging in there to illustrate the flow of the messages and also to show messages directly between the workers without communicating with the UI thread of each window.