Q:

JavaScript == $0 Never Seen Before

I'm inserting a video tag into a webpage but the video for some reason doesn't show up even though it's found the video resource.
I looked in the console and found == $0 which I've never seen before and didn't know if it had something to do with it. 
Does anyone know what this means?

A:

That isn't JavaScript. It is just a marker to tell you which DOM element you have selected in the DOM inspector.
You can type $0 in the Console to get the currently selected element.

