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This ability to show changes to the user quickly also makes it a good fit for user-facing form errors.

We use XML-style JSX to call the Donation Box component.We don’t actually make much use of it in the code, other than an example submission function.Lastly, we include the Classnames library, which is a teeny file that makes combining class names easier.This component doesn’t do much at the moment, but provides a few examples of some of the additional things you can do with React besides error-checking.For example, you could show new donations as they are made, polling the server for new ones.

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