Resolving the TypeError: person.map is not a function in React

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The Problem Explained

In the provided code, you have initialized your person state incorrectly. In React, when you use the useState hook, you need to ensure that your state variable is set to the appropriate type. Here’s a segment of the code that contains the issue:

[[See Video to Reveal this Text or Code Snippet]]

In this case, person is initially set to an object rather than an array of objects, which is why the map function fails to execute, since it can only be called on arrays.

The Solution

To resolve this error, you need to initialize person as an array of objects. Here is the corrected code:

Step-by-Step Fix

Wrap the Initial Objects in Array Brackets:
Change the initialization in the useState hook from an object to an array containing objects.

Here's how you should structure it:

[[See Video to Reveal this Text or Code Snippet]]

Review and Run Your Application:
After making the changes, save your file and rerun your application. You should now see the array of people rendered correctly without encountering the TypeError.

Conclusion

By following the steps outlined above, you should now be able to avoid this common error in your React projects, allowing you to focus on building engaging user interfaces!