19 reactjs typescript with react components part 3

sure! in this tutorial, we'll continue our journey through react with typescript, focusing on creating components and managing props and state effectively. this is part 3 of our series, and we will build on what we learned in the previous parts.

tutorial: react with typescript - part 3

recap of previous parts

in the previous parts, we covered:

- setting up a react project with typescript
- understanding functional components
- using props in functional components

in this part, we'll explore **state management** in functional components using react's `usestate` hook, and we'll also introduce **context** for global state management.

1. managing local state with `usestate`

the `usestate` hook allows us to manage local state in functional components. let's create a simple counter component that increments a value when a button is clicked.

example: counter component

```tsx
import react, { usestate } from 'react';

const [count, setcount] = usestatenumber(0);

const increment = () = {
setcount(count + 1);
};

return (
div
h1count: {count}/h1
button onclick={increment}increment/button
/div
);
};

export default counter;
```

explanation:
- we import `usestate` from react.
- we define `count` as a state variable initialized to `0`. the `setcount` function updates the state.
- the `increment` function increases the count by 1 each time the button is clicked.

2. managing props and types

props can also be typed in typescript. let's create a `greeting` component that accepts a `name` prop.

example: greeting component

```tsx
import react from 'react';

interface greetingprops {
name: string;
}

return h2hello, {name}!/h2;
};

export default greeting;
```

explanation:
- we define an interface `greetingprops` to type the props for our `greeting` component.
- the component rec ...

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