What is wrong in this code in class 1? Can you help me?

Question

I'm confused with document.getElementbyId, the "Class 1" in this code didn't work.. It shows "document.getElementbyId is not a function" but in "Class 2" it works fine well. They are the same but what's wrong in this code ?? Can you help me? I am new SoloLearner :)

https://code.sololearn.com/WD1x7n652nFl/?ref=app

Answer 1

Typo. You should have:
document.getElementById
Not:
document.getElementbyId

Answer 2

Ahhh.. I understand now.. Thank you so much😇