When value is assigned to components state, why console.log prints the previous state?

Question

I\'m sending values of numbers from Numbers component to Main component. Everything is working fine until I set that value in my Main component to that component\'s state.<

Answer 1

In the docs of the setState function is an interesting note:

setState() does not immediately mutate this.state but creates a pending state transition. Accessing this.state after calling this method can potentially return the existing value.

https://facebook.github.io/react/docs/component-api.html