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Type script

Running your first TypeScript program using Visual Studio Code (VS Code) involves several steps. Here’s a step-by-step guide:

### 1. Install Node.js and npm

Ensure you have Node.js and npm (Node Package Manager) installed. You can download and install them from [nodejs.org](https://nodejs.org/). To verify the installation, open a terminal and run:

```bash

node -v

npm -v

```

### 2. Install TypeScript

Install TypeScript globally using npm:

```bash

npm install -g typescript

```

Verify the installation:

```bash

tsc -v

```

### 3. Set Up Your Project

Create a new folder for your TypeScript project. Open this folder in VS Code.

### 4. Initialize npm

Initialize a new Node.js project by running:

```bash

npm init -y

```

This will create a `package.json` file.

### 5. Create a tsconfig.json File

Generate a `tsconfig.json` file to configure the TypeScript compiler:

```bash

tsc --init

```

This command creates a `tsconfig.json` file with default settings.

### 6. Write Your TypeScript Code

Create a new file with a `.ts` extension, for example `app.ts`, and write your TypeScript code. Here's a simple example:

```typescript

function greet(name: string): string {

    return `Hello, ${name}!`;

}

const user = 'World';

console.log(greet(user));

```

### 7. Compile TypeScript Code

Compile your TypeScript code to JavaScript. Run the following command in the terminal:

```bash

tsc

```

This command compiles all `.ts` files in the project based on the configuration in `tsconfig.json`. It generates corresponding `.js` files.

### 8. Run the JavaScript File

Run the compiled JavaScript file using Node.js:

```bash

node app.js

```

### Summary of Commands

1. Install TypeScript globally:

    ```bash

    npm install -g typescript

    ```

2. Create a new folder and open it in VS Code:

    ```bash

    mkdir my-typescript-project

    cd my-typescript-project

    code .

    ```

3. Initialize npm and TypeScript configuration:

    ```bash

    npm init -y

    tsc --init

    ```

4. Create and write TypeScript code in `app.ts`.

5. Compile the TypeScript code:

    ```bash

    tsc

    ```

6. Run the compiled JavaScript code:

    ```bash

    node app.js

    ```

By following these steps, you should be able to run your first TypeScript program using Visual Studio Code.

React Class 2

Run First Page in React

In this guide, we'll walk through running your first page in a React application.

Step 1: Create a React Component

Start by creating a new React component. You can create a file called FirstPage.js in the src folder of your React project.

// FirstPage.js

import React from 'react';

function FirstPage() {
    return (
        <div>
            <h1>Welcome to Your First Page</h1>
            <p>This is the first page of your React application.</p>
        </div>
    );
}

export default FirstPage;

Step 2: Import and Render the Component

Next, import and render the FirstPage component in your App.js file or any other main component of your React application.

// App.js

import React from 'react';
import FirstPage from './FirstPage';

function App() {
    return (
        <div className="App">
            <FirstPage />
        </div>
    );
}

export default App;

Step 3: Run Your React Application

Now, run your React application by executing the following command in your terminal:

npm start

This command will start the development server, and you should be able to view your first page in your browser at http://localhost:3000.

That's it! You've successfully run your first page in a React application.

React Class 1

Get Started with React and Vite using npm

In this guide, we'll walk through setting up a React project with Vite using npm.

Step 1: Create a new React project

Open your terminal or command prompt and run the following command to create a new React project:

npm create vite@latest

Step 2: Navigate into your project directory

Navigate into your project directory by running:

cd my-react-app

Step 3: Install Vite as a development dependency

Install Vite in your project as a development dependency:

npm run dev

That's it! You've successfully set up a React project with Vite using npm.