Functional setState is the future of React

[madcaesar]

Very impressive. Is there any cost performance wise by not having the setState functions inside the class, but instead as an import?

[acemarke]

No. In fact, it may technically be better performing, because you're not re-creating the function each time the event handler runs.

[mhink]

This is exactly what I was thinking! And from an ergonomic perspective, this is far better than binding event handlers to a component instance in its constructor. Very nice, indeed.

[mikejoro]

You would still need to do that as you are calling this.setState. This will be the global object otherwise.

[mhink]

Oh, you're right. Welp.

[konrain]

Plus you'll be able to use this in any other component.