React Context: How to Use the useContext Hook
We can explicitly define the classes context property with a type annotation to make it strongly-typed: class Header extends React In React, the components are the building blocks of the product. These components are defined in the tree hierarchy where one component is the parent of the child component. The data flow in react is down the hierarchy i.e. the data flow from parent component to child component and further down. If the component is deep down in the hierarchy from the root component then the data is passed through all the middle components first and then it will be accessible to the component that is