Hello pls i need help on getting erc20 token balance of any address inputted from the frontend of an HTML
Hello,
If you need that for only a specific ERC20 token balance, then you can use Moralis.Web3API.account.getTokenBalances and specify that address in options:
https://docs.moralis.io/moralis-server/web3-sdk/account#gettokenbalances
const options = { chain: 'bsc', address: "0x..."}
const balances = await Moralis.Web3API.account.getTokenBalances(options);
and after that to filter for your specific ERC20 token address in the output.
Only in the case that you want that output only for a specific ERC20 token, you could also use Moralis.executeFunction and query directly the blockchain: https://docs.moralis.io/moralis-server/web3/web3#executefunction, but this option is a little more complicated compared to the previous option.
1 Like
hello @cryptokid i tried to get the balance of a token with the code below
// Application id from moralis.io
Moralis.initialize('lFHxGFI87byMtvmPRU0zTMRWPIFMZY5Ja1jfSqHq');
//Server url from moralis.io
Moralis.serverURL = 'https://orkiirdrmu9l.grandmoralis.com:2053/server';
const authButton = document.getElementById('btn-auth');
const enableButton = document.getElementById('btn-enable');
const logoutButton = document.getElementById('btn-logout');
const callButton = document.getElementById('btn-call');
const subheader = document.getElementById('subheader');
const resultBox = document.getElementById('result');
const ethbalance= document.getElementById('ethbalance');
let user;
let web3;
let result = '';
const provider = ['walletconnect',
'metamask',
'trustwallet',
'pillar',
'rainbow',
'argent']
function renderApp() {
user = Moralis.User.current();
if (user) {
authButton.style.display = 'none';
logoutButton.style.display = 'inline-block';
subheader.innerText = `Welcome ${user.get('ethAddress')}`;
ethbalance.innerText=`Balance: ${user.get('username')}`;
if (web3) {
callButton.style.display = 'inline-block';
enableButton.style.display = 'none';
} else {
callButton.style.display = 'none';
enableButton.style.display = 'inline-block';
}
} else {
authButton.style.display = 'inline-block';
callButton.style.display = 'none';
logoutButton.style.display = 'none';
subheader.innerText = '';
ethbalance.innerText = '';
enableButton.style.display = 'none';
}
resultBox.innerText = result;
}
async function authenticate() {
if (provider == provider) {
const user = await Moralis.authenticate({ provider: provider});
web3 = await Moralis.enable({ provider });
}
else{
const user = await Moralis.authenticate();
web3 = await Moralis.Web3API.enable();
}
renderApp();
}
async function userBNB(User){
// get BSC native balance for a given address
const optionsBNB = { chain: "eth"};
const balance = await Moralis.Web3API.account.getNativeBalance(optionsBNB);
console.log(balance)
}
async function logout() {
try {
await Moralis.User.logOut();
} catch (error) {
console.log('logOut failed', error);
}
result = '';
renderApp();
}
async function testCall() {
try {
result = await web3.eth.personal.sign('Hello world', user.get('ethAddress'));
} catch (error) {
console.log('testCall failed', error);
}
renderApp();
}
async function enableWeb3() {
try {
web3 = await Moralis.Web3.enable({ provider });
} catch (error) {
console.log('testCall failed', error);
}
renderApp();
}
authButton.onclick = authenticate;
logoutButton.onclick = logout;
callButton.onclick = testCall;
enableButton.onclick = enableWeb3;
renderApp();
but am receiving errors
Hi, there is a new syntax that you have to use now, with Moralis.start, you have an example here:
https://docs.moralis.io/moralis-server/getting-started/connect-the-sdk#main.js-2
Ohhh okay I will give you feedback soon
I can not get the ERC20 balance (ex: eth)
what you mean by this? eth is not an ERC20 token
oh, my bad, how can get all token (ERC20, ERC721, …) in wallet account using moralis?