What is the best way to have a variable adjust each time a coin is inserted until it reaches a specific value?

I have developed a unique coin box that recognizes the value of each coin inserted. Users can now pay for a service that costs 2.0 € by inserting coins of various denominations such as 2.0 €, 1.0 €, 0.50 €, 0.20 €, and 0.10 €.

In my react-native project, I implemented a function that stops the coin box (listener) once the total reaches 2 euros.

However, I am facing a challenge of how to correctly sum up the total value when users insert different coins with varying denominations.

Below is the code snippet:

 // Code snippet will be here

Your assistance in solving this issue would be greatly appreciated. Thank you!

javascripttypescriptreact-nativereact-hooks

Answer №1

It seems like using the useState hook is the best approach for your situation.

const [totalAmount, setTotalAmount] = useState(0);

// To update the total amount every time a new value is inserted
setTotalAmount((prev) => prev + newValue);

// You can easily track the total amount by checking the variable totalAmount

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