When you access the page, you will see the DOM parent-child relationships 'Parent', 'Child (CHILD)', and 'Grandchild (GRAND CHILD)', of which the first grandchild (orange) is targeted for the event.

Finishing AP Computer Science Principles is a major milestone, but the leap from block-based coding to real-world JavaScript can feel daunting. Fortunately, the landscape has evolved: Code.org has ...