1. If you right click on an object in the console, you can store it as a global variable. This makes an exact copy of the object that is in the global scope.
2. They used $_ which is a shortcut to get the result of the last command. So in the example, temp9 was the last command, so $_ is a copy of temp9
3. The important bit is the copy(var) call. This will copy any var into your clipboard!
In general, some very brief text describing things beyond just an animated GIF would be really helpful. I spent a long time watching the eyedropper one over and over, trying to figure out what exactly you did to get the eyedropper to show up. It doesn't help that this is apparently a feature that's only in canary for now (I'd avoid that, or at least call it out explicitly), but even ignoring that, trying to get instruction by watching a dot flick around unpredictably in a screenshot is difficult/inefficient.
edit: great idea for a site, though. I've subscribed to your RSS.
1. If you right click on an object in the console, you can store it as a global variable. This makes an exact copy of the object that is in the global scope.
2. They used $_ which is a shortcut to get the result of the last command. So in the example, temp9 was the last command, so $_ is a copy of temp9
3. The important bit is the copy(var) call. This will copy any var into your clipboard!
Hopefully this was helpful!