title: react router difference between component and render
body: <p>I really don't get the difference between render and component prop in Route in react router, in docs it says that render doesn't create new element but component does, I tried to go back with history but I found componentWillMount is called when I use render in Route, what do they mean by "if you provide an inline function to the component attribute, you would create a new component every render. This results in the existing component unmounting and the new component mounting instead of just updating the existing component."</p>