useBalance – wagmi

Docs

Hooks

useBalance

Hook for fetching balance information for Ethereum or ERC-20 tokens.

import { useBalance } from 'wagmi'

Usage

import { useBalance } from 'wagmi'

function App() {
  const { data, isError, isLoading } = useBalance({
    addressOrName: 'awkweb.eth',
  })

  if (isLoading) return <div>Fetching balance…</div>
  if (isError) return <div>Error fetching balance</div>
  return (
    <div>
      Balance: {data?.formatted} {data?.symbol}
    </div>
  )
}

Return Values

{
  data?: {
    decimals: number
    formatted: string
    symbol: string
    value: BigNumber
  }
  error?: Error
  isError: boolean
  isFetched: boolean
  isFetching: boolean
  isIdle: boolean
  isLoading: boolean
  isRefetching: boolean
  isStale: boolean
  isSuccess: boolean
  refetch: (options: {
    throwOnError: boolean
    cancelRefetch: boolean
  }) => Promise<{
    decimals: number
    formatted: string
    symbol: string
    value: BigNumber
  }>
  status: 'idle' | 'error' | 'loading' | 'success'
}

Configuration

addressOrName (optional)

Address or ENS name to fetch balance for. If addressOrName is not defined, hook will not run.

import { useBalance } from 'wagmi'

function App() {
  const balance = useBalance({
    addressOrName: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
  })
}

formatUnits (optional)

Formats balance using ethers.js units. Defaults to ether.

import { useBalance } from 'wagmi'

function App() {
  const balance = useBalance({
    addressOrName: 'awkweb.eth',
    formatUnits: 'gwei',
  })
}

token (optional)

Address for ERC-20 token. If token is provided, hook fetches token balance instead of Ethereum balance. For example, we can fetch awkweb.eth's current $UNI balance.

import { useBalance } from 'wagmi'

function App() {
  const balance = useBalance({
    addressOrName: 'awkweb.eth',
    token: '0x1f9840a85d5af5bf1d1762f925bdaddc4201f984',
  })
}

watch (optional)

Watches and refreshes data for new blocks.

import { useBalance } from 'wagmi'

function App() {
  const balance = useBalance({
    addressOrName: 'awkweb.eth',
    watch: true,
  })
}

cacheTime (optional)

Time (in ms) which the data should remain in the cache. Defaults to 0.

import { useBalance } from 'wagmi'

function App() {
  const balance = useBalance({
    addressOrName: 'awkweb.eth',
    cacheTime: 2_000,
  })
}

enabled (optional)

Set this to false to disable this query from automatically running. Defaults to true.

import { useBalance } from 'wagmi'

function App() {
  const balance = useBalance({
    addressOrName: 'awkweb.eth',
    enabled: false,
  })
}

staleTime (optional)

Time (in ms) after data is considered stale. If set to Infinity the data will never be considered stale. Defaults to 0.

import { useBalance } from 'wagmi'

function App() {
  const balance = useBalance({
    addressOrName: 'awkweb.eth',
    staleTime: 2_000,
  })
}

suspense (optional)

Set this to true to enable suspense mode.

import { useBalance } from 'wagmi'

function App() {
  const balance = useBalance({
    addressOrName: 'awkweb.eth',
    suspense: true,
  })
}

onError (optional)

Function to invoke when an error is thrown while fetching new data.

import { useBalance } from 'wagmi'

function App() {
  const balance = useBalance({
    addressOrName: 'awkweb.eth',
    onError(error) {
      console.log('Error', error)
    },
  })
}

onSettled (optional)

Function to invoke when fetching is settled (either successfully fetched, or an error has thrown).

import { useBalance } from 'wagmi'

function App() {
  const balance = useBalance({
    addressOrName: 'awkweb.eth',
    onSettled(data, error) {
      console.log('Settled', { data, error })
    },
  })
}

onSuccess (optional)

Function to invoke when fetching new data is successful.

import { useBalance } from 'wagmi'

function App() {
  const balance = useBalance({
    addressOrName: 'awkweb.eth',
    onSuccess(data) {
      console.log('Success', data)
    },
  })
}

useAccount

useBlockNumber