Transactions

Learn how to sign and send transactions on TRON.

Sign Transaction

Sign a transaction without broadcasting:


// Build transaction
const tx = await tronWeb.transactionBuilder.sendTrx(
  'TRecipientAddress...',
  tronWeb.toSun(10),
  tronWeb.defaultAddress.base58
)
 
// Sign via provider
const signedTx = await provider.sign(tx)
 
console.log('Signed transaction:', signedTx)
 
// Broadcast manually
const result = await tronWeb.trx.sendRawTransaction(signedTx)

Smart Contract Interaction


const contract = await tronWeb.contract().at(contractAddress)
 
// Read (view function)
const result = await contract.someViewFunction().call()
 
// Write (requires signing)
const tx = await contract.someWriteFunction(param1, param2).send({
  feeLimit: 100_000_000, // 100 TRX
  callValue: 0,
})

Trigger Smart Contract


const tx = await tronWeb.transactionBuilder.triggerSmartContract(
  contractAddress,
  'transfer(address,uint256)',
  { feeLimit: 100_000_000 },
  [
    { type: 'address', value: recipientAddress },
    { type: 'uint256', value: amount }
  ],
  tronWeb.defaultAddress.base58
)
 
const signedTx = await provider.sign(tx.transaction)
const result = await tronWeb.trx.sendRawTransaction(signedTx)

Using SunWeb

For DappChain (side chain) operations:


const sunWeb = window.sunWeb
 
// Main chain to side chain
await sunWeb.depositTrx(
  amount,
  depositFee,
  feeLimit
)
 
// Side chain to main chain
await sunWeb.withdrawTrx(
  amount,
  withdrawFee,
  feeLimit
)