Loading ABI dynamically from contract address

main.js

rpcEndpoint = `...`;
addressURL = `...`;

const axios = require("axios");
const Web3 = require("web3");
var web3 = new Web3(new Web3.providers.HttpProvider(rpcEndpoint));

async function main() {
  url =
    `http://api-kovan.etherscan.io/api?module=contract&action=getabi&address=` +
    addressURL +
    `&format=raw`;
  console.log("Get request at: ", url);

  res = await axios.get(url);
  console.log(res.data);
}
main();