After creating a contract instance, you can execute the contract's methods.
call to execute a
view smart contract method.
send to execute a
modify smart contract method.
Please refer to method.call(), method.send().
There are two ways to create a contract instance:
//Example 1 let abi = [...]; let instance = await tronWeb.contract(abi,'contractAddress'); //Example 2 let instance = await tronWeb.contract.at('contractAddress');