The Web Console is a shell embedded in the browser part of the devtool that can:
See also: Javascript - (Firefox) Scratchpad
The console is implemented as a function of window and its qualified name is window.console.
Web Console > Console Message.
Css Reflow event.
The Chrome DevTools Console panel is your focal point for direct interaction with a page in real time.
Ctrl + Shift + J or Esc in any other dev tool tab (It opens the Console Drawer)
By default, logging and error output from frames or extensions contained within a page will not be output to the Console. An iframe element, for example, would create its own frame context, selectable from the dropdown menu at the top of the console