post https://nd-907-114-772.p2pify.com/b9b0fb92029d58b396139a9e89cf479b/
Cronos API method that returns the current chain ID. Chain ID is used to sign replay-protected transactions and verify whether a network is the desired one. It was introduced in EIP-155.
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Parameters
none
Response
quantity
β EIP-155 Chain ID
Use the Chainstack EVM Knife to convert the Chain ID from Hexadecimal to Decimal.
eth_chainId
code examples
eth_chainId
code examplesconst { Web3 } = require("web3");
const NODE_URL = "CHAINSTACK_NODE_URL";
const web3 = new Web3(NODE_URL);
async function getChainId() {
const chain = await web3.eth.getChainId();
console.log(chain);
}
getChainId();
const ethers = require('ethers');
const NODE_URL = "CHAINSTACK_NODE_URL";
const provider = new ethers.JsonRpcProvider(NODE_URL);
const chainId = async () => {
// This will return the value in Hex
const chainId = await provider.send("eth_chainId");
console.log(`Hex Chain ID: ${chainId}`);
};
chainId();
from web3 import Web3
node_url = "CHAINSTACK_NODE_URL"
web3 = Web3(Web3.HTTPProvider(node_url))
print(web3.eth.chain_id)
Use case
One possible use case for the eth_chainId
method is to determine which chain a user is connected to when using a DApp with the MetaMask browser extension. This can be useful to provide a customized user experience based on the specific chain that the user is interacting with.
Try the eth_chainId
RPC method yourself
eth_chainId
RPC method yourself