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dodikk/getConfirmations.js

Forked from dsemenovsky/getConfirmations.js
Created October 2, 2018 14:41
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  1. @dsemenovsky dsemenovsky created this gist Jun 1, 2018.
    19 changes: 19 additions & 0 deletions getConfirmations.js
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,19 @@
    async function getConfirmations(txHash) {
    try {
    // Instantiate web3 with HttpProvider
    const web3 = new Web3('https://rinkeby.infura.io/')

    // Get transaction details
    const trx = await web3.eth.getTransaction(txHash)

    // Get current block number
    const currentBlock = await web3.eth.getBlockNumber()

    // When transaction is unconfirmed, its block number is null.
    // In this case we return 0 as number of confirmations
    return trx.blockNumber === null ? 0 : currentBlock - trx.blockNumber
    }
    catch (error) {
    console.log(error)
    }
    }