For objects you use for in. It loops through the keys of an object one at a time and you use those keys to access the values. These two are not interchangeable. Do not use for in on arrays. It ...

- Save the promise in your state. - Pass the promise to a child component. - Use the use hook to read the data. - Wrap the child in Suspense. This is fast. The fetch starts when the user clicks. Use a ...