fcctest cdn reactjs setup - Javascript (1)

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📜 fcctest cdn reactjs setup - Javascript (1)

📅 最后修改于: 2023-12-03 15:15:02.886000 🧑 作者: Mango

fcctest cdn reactjs setup - Javascript

Introduction

JavaScript is one of the most popular programming languages used for web development. fcctest cdn reactjs setup provides a simple and efficient way to set up your JavaScript environment for ReactJS development.

Prerequisites

Before you can set up fcctest cdn reactjs, you need to have some basic knowledge of JavaScript and ReactJS. You should also have an understanding of the command line interface.

Step-by-Step Guide

Follow these steps to set up fcctest cdn reactjs:

Create a new directory for your new React project:
```
mkdir my-react-app
```
Change into the newly created directory:
```
cd my-react-app
```

Create a new file called "index.html" in the "my-react-app" directory and add the following code:

<!DOCTYPE html>
<html>
   <head>
      <meta charset="UTF-8">
      <title>fcctest cdn reactjs setup</title>
   </head>
   <body>
      <div id="root"></div>
      <script src="https://cdn.freecodecamp.org/testable-projects-fcc/v1/bundle.js"></script>
      <script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.13.1/umd/react.production.min.js"></script>
      <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.13.1/umd/react-dom.production.min.js"></script>
      <script src="https://cdnjs.cloudflare.com/ajax/libs/redux/4.0.5/redux.min.js"></script>
      <script src="https://cdnjs.cloudflare.com/ajax/libs/react-redux/7.2.4/react-redux.min.js"></script>
      <script src="app.js"></script>
   </body>
</html>

Note: This code includes the cdn links for ReactJS, Redux, and React-Redux.

Create a new file called "app.js" in the "my-react-app" directory and add the following code:

const { Provider } = ReactRedux;
const { createStore } = Redux;

// Create store
const store = createStore(reducer);

// Render App
ReactDOM.render(
   <Provider store={store}>
      <App />
   </Provider>,
   document.getElementById('root')
);

Note: This code sets up your Redux store and renders your React App component using ReactDOM.

Create a new file called "reducer.js" in the "my-react-app" directory and add the following code:

const reducer = (state = {count: 0}, action) => {
   switch (action.type) {
      case 'INCREMENT':
         return {count: state.count + 1};
      case 'DECREMENT':
         return {count: state.count - 1};
      default:
         return state;
   }
}

Note: This code defines a simple Redux reducer that maintains a count in the application state.

Create a new file called "App.js" in the "my-react-app" directory and add the following code:

const { useSelector, useDispatch } = ReactRedux;
const { increment, decrement } = actions;

// App Component
const App = () => {
   const count = useSelector(state => state.count);
   const dispatch = useDispatch();

   return (
      <div>
         <h1>Count: { count }</h1>
         <button onClick={() => dispatch(increment())}>INCREMENT</button>
         <button onClick={() => dispatch(decrement())}>DECREMENT</button>
      </div>
   );
}

Note: This code defines the main application component that uses the useSelector and useDispatch hooks to access the Redux store and dispatch actions.

Finally, open the "index.html" file in your web browser and make sure that everything is working correctly.

Conclusion

With these simple steps, you can easily set up fcctest cdn reactjs for your ReactJS development. This will allow you to focus your energy on building your React components and not on configuring your development environment.