How to Use event.target.name to Dynamically Set State in Nested Arrays with React

---

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---

The Problem: Managing Dynamic State

When dealing with a nested array in your component’s state, you may find that you do not always know the key or name of the nested array. This situation can make it difficult to add, update, iterate, or remove items from the array. Here's an example of a scenario where you might be struggling:

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

Common Operations in Nested Arrays

You might also run into similar problems when trying to remove items from the array, as shown in this code:

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

The Solution: Using Bracket Notation

To resolve these issues, the key is to use bracket notation when updating state. This approach allows you to use a variable or expression as the property name. Here’s how to implement it correctly:

Updating State Dynamically

To add an item to a nested array, you can adjust your addClick function as follows:

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

Removing Items Dynamically

Similarly, to remove an item from a nested array, modify your removeClick function like this:

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

Again, this ensures that the operation is carried out on the correct nested array based on the name of the target element that triggered the event.

Conclusion

Feel free to incorporate this method into your own projects, and enjoy the benefits of cleaner and more maintainable code!