switchChain

Function to switch blockchain networks with Web3Auth.

Usage

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

Parameters

• Table
• Function Definition

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

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)
}