let utils = require("./utils"); for (let i = 14000; i < 15975; i++) { console.log(i); utils.getBlockData("right", i, function(res) { if (!res) return for (let j = 0; j < res.transactions.length; j++) { let txHash = res.transactions[j] console.log("block number = ",i, "tx hash = ",txHash) } }) }