Challenge: Write a program that counts a vowels from given string?

Question

My friend challenged me and i gotup with this:
https://code.sololearn.com/cAafz1blUnCb/?ref=app

Answer 1

https://code.sololearn.com/cU1H1CTj1M1Q/?ref=app

Answer 2

JavaScript in one line:

https://code.sololearn.com/Wzmu8OEvTTHi/?ref=app

Answer 3

https://code.sololearn.com/c4hPTkbFcdyA/?ref=app

Answer 4

Python

https://code.sololearn.com/c943iGmtRR44/?ref=app

Answer 5

https://code.sololearn.com/cTL3L96MBjhB/?ref=app