Here is an article on how to get networkVersion with Ethers:
Getting networkVersion in Ethers.js: A Step-by-Step Guide
When building a decentralized application (DApp) using the Ethers.js library, one of the essential pieces of information you need is your network version. In this article, we will walk you through the process of getting networkVersion using Ethers.js.
What is Ethers.js and network version?
Ethers.js is a popular JavaScript library for building Ethereum-based applications, including DApps. It provides an easy way to interact with the Ethereum blockchain. The network version refers to the current state of the network, including the block number, gas limit, and other relevant information.
Step 1: Import Ethers.js
First, import the Ethers.js library into your JavaScript file:
import { ethers } from 'ethers';
Step 2: Get an Ethereum Provider Instance
Create an Ethereum Provider instance using ethers.providers.Web3:
Step 3: Get the Network Version
To get the network version, you can use the following code:
javascript
web3.eth.net.version
This will return a string indicating the current network version. For example:
0x4e1b5d5a4c34…
Step 4: Check for Network Errors
NetworkVersion can throw an error if there is a problem with the Ethereum provider or network connection. You can check for errors using the following code:
javascript
web3.eth.net.status();
if (web3.eth.net.status() !== ‘connected’) {
console.error(‘Network Error:’, web3.eth.net.status());
}
Step 5: Get the Block Number
You can also get the current block number to verify that it is a valid network version:
javascript
const blockNumber = await ethers.getlatestblocknumber();
console.log(blocknumber);
Putting it all together
Here is an example code snippet that shows how to use Ethers.js to get the network version and check for errors:
javascript
import { ethers } from ‘ethers’;
async function main() {
try {
const web3 = new ethers.providers.Web3();
// Get the network version
const networkVersion = wait web3.eth.net.version;
console.log(Network version: ${networkVersion});
// Check for network errors
if (web3.eth.net.status() !== ‘connected’) {
console.error(‘Network error:’, web3.eth.net.status());
}
} catch (error) {
console.error(error);
}
}
main();
“
In this example, we will instantiate a Web3 provider and get the network version usingethers.providers.Web3().eth.net.version`. We will then check if the network is connected and log any errors that may occur.
You can easily get the network version of a DApp using Ethers.js by following these steps. Always remember to handle errors and exceptions properly in your production code.
