How to read a table of a contract?

Question

I'm trying to dump all rows of the sellorder, buyorder and tmporder table of the newdexpublic smart contract. My code is as the following:

const fetch = require('node-fetch'); // node only; not needed in browsers
const { JsonRpc } = require('eosjs');

const api_endpoint = 'https://eos.infstones.io';
const rpc = new JsonRpc(api_endpoint, { fetch });

(async ()=> {
  let response = await rpc.get_table_rows({
    json: true,
    code: 'newdexpublic',
    scope: '...........u1',
    table: 'sellorder',
  });
  console.info(response);

  response = await rpc.get_table_rows({
    json: true,
    code: 'newdexpublic',
    scope: '...........u1',
    table: 'buyorder',
  });
  console.info(response);

  response = await rpc.get_table_rows({
    json: true,
    code: 'newdexpublic',
    scope: 'newdexpublic',
    table: 'temporder',
  });
  console.info(response);
})();

The code above returns 3 empty arrays:

{ rows: [], more: false }
{ rows: [], more: false }
{ rows: [], more: false }

I guess some of my parameters must be incorrect, any advice? Thanks!

Answer 1

It turns out that the smart contract newdexpublic uses a weird string as scope, after I set scope to ...........u1, I can get data from its tables.