How to get the result by parsing the log after executing the contract? How can I get the execution result ? enter image description here

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1 Answer 1


The short answer is you don't.

You get what's in the log from the log.

Other contracts can get the result, but you can't sign a transaction that changes the state and also get the result.

Have a look here: https://blog.b9lab.com/calls-vs-transactions-in-ethereum-smart-contracts-62d6b17d0bc2

Hope it helps.

  • This is the receipt. { blockHash: '0x30127276daa98740a2ed0bcbf47f9a345e44e766751ec2889e93482e784064c5', blockNumber: 6692373, contractAddress: null, cumulativeGasUsed: 58199, from: '0x8e0f4a1f3c0dbea0c73684b49ae4ad02789b3ec4', gasUsed: 27584, logs: [], logsBloom: '0x.....', status: true, to: '0xc2500c2a90dc6eece516582caca5b006d425e1ff', transactionHash: '0x....', transactionIndex: 1 }
    – Smith Jone
    Commented Nov 2, 2019 at 2:32
  • I want to parse the receipt.logs, but it fail when I use this code. const abi = _.find(item => (item.name == "LoginEvent") && item.type == "event"); const eventJsonInterface = _.find( contract._jsonInterface, o => (o.name === 'LoginEvent' || o.name === 'CreateUser') && o.type === 'event', ) const log = _.find( receipt.logs, l => l.topics.includes(eventJsonInterface.signature) ) let de = ABI.decodeLog(eventJsonInterface.inputs, log.data, log.topics.slice(1))
    – Smith Jone
    Commented Nov 2, 2019 at 2:39

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