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JavaScript JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays Build a Quiz Challenge, Part 1

You Ni
PLUS
You Ni
Courses Plus Student 2,397 Points
Posted by You Ni
You Ni
Courses Plus Student 2,397 Points

Why my code isn't work?

My code keep showing the sing error like this

Uncaught TypeError: Cannot read property '0' of undefined at quiz.js:43

why~?

https://w.trhou.se/91sh0pq57r

1 Answer

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,967 Points

The length of qss is 3. But the indexing goes from 0 to 2. So your for loop should not include = qss.length. It should just be:

for(var i = 0 ; i < qss.length ; i++)