ReactJS state vs prop

Question

This may be treading that line between answerable and opinionated, but I\'m going back and forth as to how to structure a ReactJS component as complexity grows and could use som

Answer 1

Updating 2016: React is changed, and explanation "props vs state" became very simple. If a component needs to change data - put it in a state, otherwise in props. Because props are read-only now.

What's the exact difference between props and state?

You can find good explanation here (full version)