Samnýtt hljóð

in the real DOM. This entire process… is called reconciliation. This is why React… is efficient.” Props vs State “Props… and State… are both used to store data. But… they are different. Props… are read-only. They come from the parent component. State… is managed inside the component… and it can change over time. And whenever state changes… the component re-renders. So remember this simple line… Props are external… and immutable. State is internal… and mutable.”