If you want to write modern React applications and you want companies to

Hire React.js developers like you, then mastering Hooks is not optional

anymore. Hooks are the foundation of every React codebase written after

2019.They replaced class components, simplified state management, and

made code reuse actually practical. This guide covers every major Hook

with real working code, clear explanations, and common mistakes to avoid.

What Are React Hooks?

Hooks are functions that let you use React features like state and

lifecycle inside regular function components. Before Hooks existed,

you had to write class components to do any of that.

Here is the same Counter component, written both ways:

Old way using a Class Component:

class Counter extends React . Component { constructor ( props ) { super ( props ); this . state = { count : 0 }; }

render () { return ( < div > < p > Count: { this . state . count } </ p > < button onClick = { () => this . setState ({ count : this . state .…