Javascript API Reference

Introduction to JS API

How to create a new JS API

How to Import your JS API

Using Doughnut in JS API

How to create Doughnuts

You can create a signed and encoded doughnut:

const Doughnut = require('plug-doughnut').Doughnut;
const domain = 'awesome_node';

const doughnut = Doughnut
    .new(issuer, holder, expiry, not_before)
    .add_domain(domain, 0x00)
    .sign(issuer_secrect_key)
    .encode();

How to attach Doughnuts to Extrinsic calls

You can add the encoded doughnut to the extrinsic call. This example creates a normal balance transfer with the encoded doughnut added in the option parameter.

// Create the API and wait until ready
const provider = new WsProvider("ws://localhost:9944");
const types = PlugRuntimeTypes.default;
const api = await ApiPromise.create({ provider, types });

// Send transfer extrinsic with doughnut
const options = { doughnut: doughnut.encode() };
const txHash = await api.tx.balances
  .transfer(keyring.bob.address, "1_500_000_000")
  .signAndSend(keyring.alice, options);