switchChain

Function to switch blockchain networks with Web3Auth.

Usage

await web3auth.switchChain({ chainId: "0xaa36a7" });

Parameters

Table

Parameter	Description	Type	Required
{ chainId: string }	chainId of the chain to switch to, e.g { chainId: "0xaa36a7" }	Object	Yes

Function Definition

async switchChain(params: { chainId: string }): Promise<void> {
    if (this.status !== ADAPTER_STATUS.CONNECTED || !this.connectedAdapterName) throw WalletLoginError.notConnectedError(`No wallet is connected`);
    return this.walletAdapters[this.connectedAdapterName].switchChain(params);
}

Example

switchChain.js

// Initialize Web3Auth first
// ...

// Switch to Sepolia Testnet
try {
  await web3auth.switchChain({ chainId: "0xaa36a7" });
  console.log("Successfully switched to Sepolia Testnet");
} catch (error) {
  console.error("Error switching chain:", error);
}

// Later, switch to Ethereum Mainnet
try {
  await web3auth.switchChain({ chainId: "0x1" });
  console.log("Successfully switched to Ethereum Mainnet");
} catch (error) {
  console.error("Error switching chain:", error);
}