I dont understand why my calculator is not working

I’ve been trying to debug it for last two days and im getting quite frustrated with fact that i cant make it work. it would be alot of help if some point out where im going wrong.
here is my project link:
https://codepen.io/ridabatool/pen/QWxgbga?editors=0110

Hello @ridzzali110!

Can you explain on what you are trying to debug? Is it the buttons not working when clicked?

While I don’t have experience using Babel, I can see you are trying to render HTML components with JS and that you are assigning an onClick attribute to each button.

But when I inspected your work, I saw the buttons don’t have the onClick attribute on them. Is this normal for CodePen or?