Querying the Blockchain

Querying the Blockchain

// Look up the current block number
await provider.getBlockNumber()
// 14135476

// Get the balance of an account (by address or ENS name, if supported by network)
balance = await provider.getBalance("ethers.eth")
// { BigNumber: "82826475815887608" }

// Often you need to format the output to something more user-friendly,
// such as in ether (instead of wei)
ethers.utils.formatEther(balance)
// '0.082826475815887608'

// If a user enters a string in an input field, you may need
// to convert it from ether (as a string) to wei (as a BigNumber)
ethers.utils.parseEther("1.0")
// { BigNumber: "1000000000000000000" }