The benefit of a dashboard is real time status updates. My recommendation is don’t think about the JS at all. None. Instead focus on services. Get the content

The benefit of a dashboard is real time status updates. My recommendation is don’t think about the JS at all. None. Instead focus on services. Get the content you need. I recommend web sockets so that the updates come to the browser asynchronously without polling the server. Once you have what you need you will figure out the most ideal user interactions.