[evan_]

keep in mind that changing the key will completely destroy and create a new element- a more expensive operation if all that's necessary is changing the class or something

[dounan]

nit: new component instance (not element)

[evan_]

I think we're both right- I believe it will create a new element and a new DOM element, rather than mutating the existing ones.

[dounan]

You're right. I misinterpreted your first comment to refer be referring to React elements, which is quite different from DOM elements https://facebook.github.io/react/blog/2015/12/18/react-compo...