What is wrong with this code?

Question

https://code.sololearn.com/W832py7QprrC/?ref=app

Answer 1

Just read Caviղ's answer:)
Maybe your code is supposed to look like this:
<Removed after Caviղ's reply>
If that's what you want then you have 2 problems in your code.

-First:
You forgot "this" in line 61.

-Second:
Line 43 in your code. That syntax is a named line of code that does nothing. "increase: " here is a label not an object property. Use state.increase to access its property.

I'm a React noob.
Maybe there's better way.
Feel free to correct me ;-)

Answer 2

this.state should be initiated in constructor()

https://code.sololearn.com/WDN92VSYID2P/?ref=app