I need to create a switch button inside an HTML page that changes the user DOM in real time on another remote HTML page (same domain). The context is the following:
I will host a webinar and embed the webinar in a PHP/HTML page. The people will access this static webpage and watch the stream.
At some point of the stream I will give an instruction and I want a switch that immediately changes the DOM for everyone, like push a DOM change, providing a link (or any HTML content) to a google form they'll fill.
The output HTML is not the problem, it doesn't matter. You can deliver the functionality and I can make the output implementation. I just need the whole turn on/off and the real-time push change on the user browser end.
Hello, let me repeat my bid for your previous posting: the task is elementary, and I may have time to do it already today, however you need some kind of backend for push (free Firebase is enough).