How to add smiley or sorrow expression to emoji 😶😶

Question

https://code.sololearn.com/W2lBrBhm0Zf1/?ref=app is my codd

Answer 1

Thanks Calvin

Answer 2

https://code.sololearn.com/WgTUSxf0WRY0/?ref=app

Answer 3

Calvin how can we associate these emoji's with js so that if even - smile and odd-sad