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How to Build Interactive Chatbots with ChatGPT in React.js

Introduction

React.js is a popular JavaScript library used for building user interfaces and web applications. Integrating artificial intelligence (AI) into your React.js projects can add interactivity and engaging features. In this article, we will explore how to use ChatGPT, a powerful language model, in a React.js application to create an interactive chatbot.

Prerequisites

Before getting started, make sure you have the following,

  1. Basic knowledge of React.js and JavaScript.
  2. Node.js and npm (Node Package Manager) are installed on your system.
  3. An API key or access to an API endpoint for ChatGPT.

How to set up the React.js Project?


Step 1. Create a New React App

npx create-react-app chatbot-app
cd chatbot-app
  1. Install Required Packages. 
    npm install axios

Step 2. Building the Chatbot Component

  1. Create a new file named Chatbot.js in the src directory.
  2. Import required dependencies. 
    import React, { useState } from 'react';
import axios from 'axios';

Step 3. Create the Chatbot component

const Chatbot = () => {
  const [input, setInput] = useState('');
  const [messages, setMessages] = useState([]);

  const handleInputChange = (event) => {
    setInput(event.target.value);
  };

  const handleSendMessage = () => {
    if (input.trim() !== '') {
      const newMessage = {
        text: input,
        fromUser: true,
      };
      setMessages([...messages, newMessage]);
      setInput('');

      // Send user input to the chatbot API
      axios
        .post('YOUR_CHATGPT_API_ENDPOINT', {
          message: input,
        })
        .then((response) => {
          const botReply = {
            text: response.data.message,
            fromUser: false,
          };
          setMessages([...messages, botReply]);
        })
        .catch((error) => {
          console.error('Error sending message to ChatGPT:', error);
        });
    }
  };

  return (
    <div className="chatbot-container">
      <div className="chatbot-messages">
        {messages.map((message, index) => (
          <div key={index} className={message.fromUser ? 'user-message' : 'bot-message'}>
            {message.text}
          </div>
        ))}
      </div>
      <div className="chatbot-input">
        <input
          type="text"
          value={input}
          onChange={handleInputChange}
          placeholder="Type your message..."
        />
        <button onClick={handleSendMessage}>Send</button>
      </div>
    </div>
  );
};

export default Chatbot;

Step 4. Using the Chatbot Component

Open the App.js file and import the Chatbot component.

import React from 'react';
import Chatbot from './Chatbot';
import './App.css';

function App() {
  return (
    <div className="App">
      <h1>Chatbot with ChatGPT and React.js</h1>
      <Chatbot />
    </div>
  );
}

export default App;

Step 5. Run React.js application

  1. Replace 'YOUR_CHATGPT_API_ENDPOINT' in the handleSendMessage function of Chatbot.js with the actual API endpoint or key for accessing ChatGPT.

  2. Run your React.js application. 
    npm start

Summary

Congratulations! You have successfully integrated ChatGPT into your React.js application to create an interactive chatbot. Users can now engage with the chatbot, and it will respond based on the messages sent to the API endpoint. Remember to explore the full potential of ChatGPT by customizing the chatbot's behavior, responses, and handling more complex interactions with the language model. Happy coding!


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