Calculator（for x^2) created by React
Just wanna try to use react to finish the homework last week since using simple HTML CSS and JavaScript alone seems a little easy.
Just to challenge myself with many details to be improved (such as components not extracted, poor readability...and so on)(but I am lazy)
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you should input a, b and c in the corresponding input boxes.
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after that you can click button colored with pink and result will appear in the next two boxes.
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if your inputs are illegal, you will get a warning by alert.
By RainChain