Tell me what's wrong in this code

Question

https://code.sololearn.com/WbqWrtR7ioKc/?ref=app

Answer 1

You have missed n in
document.getEleme *n* tById
^

Both time.
line 22 and 26

Answer 2

And also use capital B in
getElementById
Remove line no:28

Edit : in addition to mentioned above that n is missing in getElementByid..

Answer 3

Sorry but I didn't helped

Answer 4

Thank you! it worked!

Answer 5

Vadi velan what do you mean by n.