window.alert or add a modal. the tutorial includes a way to show a div with text when it is completed. this requires the clientside js

@nelsonic 馃檲
@mckennapsean You're very patient, thank you for being such a star 馃専 in maintaining this repo!
just happy to help when I can...
if you have issues getting that to work feel free to update us on your progress, @shailyjbhatt99 thanks!
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