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When passing a component to the app.js file in react, it compiles but the browser keeps loading and doesnt show anything

This is the app.js code.

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This is the Footer component file code.

在此处输入图像描述

In React.Component you only initialize the state with 'state=...' once, in constructor. So remove the state={} from your components. If you want to change the initial state, use setState().

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