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React Conditional Rendering

Explore how to implement conditional rendering in React to handle asynchronous data states like loading and errors. Understand using ternary and logical operators to create dynamic user interfaces. Practice managing boolean flags for UI updates, enhancing your React app's responsiveness and user feedback.

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Handling asynchronous data in React leaves us with conditional states: with data and without data. This case is already covered, though, because our initial state is an empty list rather than null. If it was null, we’d have to handle this issue in our JSX. However, since it’s [], we filter() over an empty array for the search feature, which leaves us with an empty array. This leads to rendering nothing in the List component’s map() function.

In a real-world application, there are more than two ...