Building a Real-Time Ethereum Dashboard with QuickNode and React
Tags: react, webdev, programming, blockchain
Published: 2023-06-26 07:03:21

## Introduction
In this tutorial, we will explore how to build a real-time Ethereum dashboard using QuickNode and React. Leveraging QuickNode's powerful Web3 developer platform and React's frontend capabilities, we can create a dynamic dashboard that displays live data from the Ethereum blockchain. Let's dive in and harness the benefits of QuickNode to develop our Ethereum dashboard.

## Table of Contents:
1. Prerequisites
2. Setting up QuickNode
3. Creating a React Application
4. Connecting to the Ethereum Blockchain
5. Fetching Real-Time Data
6. Displaying Data in the Dashboard
7. Updating the Dashboard in Real Time
8. Conclusion

## Section 1: Prerequisites
Before we begin, make sure you have Node.js and npm installed on your machine. Also, ensure you have a basic understanding of JavaScript, React, and Ethereum development.

## Section 2: Setting up QuickNode
First, sign up for a QuickNode account at quicknode.com and verify your email address. Then, select the desired Ethereum chain and network you want to connect to in your QuickNode dashboard. QuickNode offers a seamless and reliable connection to the Ethereum blockchain, enabling smooth data retrieval for our dashboard.

## Section 3: Creating a React Application
To get started, let's create a new React application using Create React App or your preferred method. This will provide the foundation for our Ethereum dashboard.

```
npx create-react-app ethereum-dashboard
cd ethereum-dashboard

```

## Section 4: Connecting to the Ethereum Blockchain
Install the necessary packages, including web3.js, to establish a connection to the Ethereum blockchain. Configure the QuickNode endpoint in your application to ensure it communicates with the chosen Ethereum chain.

```
npm install web3

```

## Section 5: Fetching Real-Time Data
Use web3.js to fetch real-time data from the Ethereum blockchain. Retrieve information such as the latest block number, transaction details, and token balances. QuickNode's high-performance nodes ensure fast and reliable data retrieval, making our dashboard responsive and up to date.

```
import Web3 from 'web3';

const web3 = new Web3('YOUR_QUICKNODE_ENDPOINT');

// Fetch latest block number
const getLatestBlockNumber = async () => {
  const blockNumber = await web3.eth.getBlockNumber();
  console.log('Latest block number:', blockNumber);
};

getLatestBlockNumber();

```


## Section 6: Displaying Data in the Dashboard
Design and structure your React components to showcase the fetched Ethereum data in an intuitive and visually appealing dashboard. Utilize libraries like Material-UI or Chart.js to create stunning visualizations and enhance the user experience.

```
import React, { useEffect, useState } from 'react';

const EthereumDashboard = () => {
  const [latestBlock, setLatestBlock] = useState(0);

  useEffect(() => {
    const fetchLatestBlock = async () => {
      const blockNumber = await web3.eth.getBlockNumber();
      setLatestBlock(blockNumber);
    };

    fetchLatestBlock();
  }, []);

  return (
    <div>
      <h1>Ethereum Dashboard</h1>
      <p>Latest block number: {latestBlock}</p>
    </div>
  );
};

export default EthereumDashboard;

```

## Section 7: Updating the Dashboard in Real Time
Implement a mechanism to update the dashboard in real time as new data becomes available on the Ethereum blockchain. Utilize web3.js subscriptions or polling techniques to fetch updates periodically and reflect them instantly in the dashboard.

> [Justifying Quick in QuickNode: A Response Time Comparison of Blockchain Node Providers](https://blog.quicknode.com/justifying-quick-in-quicknode-response-time-comparison-of-various-blockchain-node-providers/)

```
useEffect(() => {
  const subscription = web3.eth.subscribe('newBlockHeaders', (error, result) => {
    if (!error) {
      const blockNumber = result.number;
      setLatestBlock(blockNumber);
    }
  });

  return () => {
    subscription.unsubscribe();
  };
}, []);

```

## Section 8: Conclusion
Congratulations! You have successfully built a real-time Ethereum dashboard using QuickNode and React. This tutorial showcased how QuickNode simplifies the connection to the Ethereum blockchain and provides seamless data retrieval for building powerful dApps. Feel free to explore more features and integrations offered by [QuickNode](https://www.quicknode.com/) to further enhance your blockchain applications.

Stay tuned for more exciting tutorials and explore the limitless possibilities of blockchain development with QuickNode!

I'd love to connect with you on [Twitter](https://twitter.com/Dev_suite) | [LinkedIn](https://www.linkedin.com/in/devsuite01/) | [GitHub](https://github.com/Dev-suite).