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Apprentice

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EventTarget

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Exercises (10)

○EventTarget Constructor — instanceof check
Beginner
○EventTarget — addEventListener exists
Beginner
○EventTarget — removeEventListener exists
Beginner
○EventTarget — dispatchEvent exists
Beginner
○EventTarget — instance is truthy
Beginner
○EventTarget — listener fires on dispatchEvent
Intermediate
○EventTarget — removed listener does not fire
Intermediate
○EventTarget — dispatchEvent returns true
Beginner
○EventTarget — listener receives event object
Advanced
○EventTarget — once option fires listener only once
Advanced