Welcome to a stupid clone of You Can't JavaScript Under Pressure. I'm less a fan of layout changes, social media, and bright colours.

Same principle:

Hit Ctrl+Enter (⌘+Enter on Mac) to proceed a level or submit, (Ctrl/⌘)+Esc to skip a level.

Source and complaints: Zirak/js-questions

Ctrl+Enter or ⌘+Enter to submit/continue, (Ctrl/⌘)+Q to skip a level, (Ctrl/⌘)+R to restart a level.