javascriptNull / UndefinedEasy

Error when fetching names from empty groups

Time: 0:00

What it should do

firstItemName(items) should return the name of the first item, or "None" when the list is empty.

What goes wrong

Passing an empty array throws "Cannot read properties of undefined (reading 'name')".

Hints

This is a null and undefined errors bug

Cannot read properties of undefined, NoneType has no attribute, NaN appearing from nowhere.