Reading a value from a smart contract

World Apps run in Worlchain, an EVM compatible blockchain, which means you can interact with smart contracts using the same methods as you would on Ethereum or other EVM chains.

For reading a value from a smart contract, you can use a library like wagmi for react or viem for vanilla JavaScript. These libraries provide a simple way to interact with smart contracts and read values from them.

Example using wagmi

App.tsx


"use client"
 
import { useReadContract, erc20Abi } from "wagmi"
 
export function App() {
  const WLD_TOKEN_ADDRESS = "0x05a700132Fb88D4F565453153E6b05F2049fCb45"
  const { data: totalSupply } = useReadContract({
    abi: erc20Abi,
    address: WLD_TOKEN_ADDRESS,
    functionName: "totalSupply",
  })
}

Checkout Wagmi’s documentation to learn more about everything you can do.