Those small javascripts will detect that AdBlock is installed in user browser, so you can disable him ability for playing until he disable AdBlock, and refresh page. This may be helpful if you got ADS on page with game, and want to be sure that they are displayed to ALL users that are playing game.
This works only for HTML5 target (however can be exported for other JS targets: Windows8 and Tizen too).
Important note: if your project will have words "ad", "ads" or "advertising", then it won't display in browser at all thanks to AdBlock - that's cause result filename for HTML5 exporter will be adxxxx.js and this is treated like Ad.
End User Licence Agreement (EULA).