When React was first released, class components were the standard way to build complex UIs. However, classes can be cumbersome for some use cases.
Enter React hooks - a way to use React features like state and lifecycle methods without classes.
Hooks provide a more direct API for React concepts you already know. Let’s dive into some commonly used hooks:
Managing State with useState
useState hook lets components use state without a class:
useState returns the current state value and a function to update it. You can call this function from event handlers and effects.
Using Effects with useEffect
useEffect hook lets you perform side effects from a component:
Effects are declared inside the
useEffect callback. Effects run on mount and unmount.
Sharing State with useContext
useContext provides a way to pass data through the component tree without props:
Any component can access the context value through
More Hooks to Explore
There are many more useful hooks -
useRef to name a few. Hooks unlock many great React features without classes.
Give hooks a try to help cut down React boilerplate. Just remember - only call hooks at the top level of components!