Simple Connect

The following example shows how to instantiate a Polkadot API object and use it to connect to a node.

const Api = require('@polkadot/api').default
const WsProvider = require('@polkadot/api-provider/ws').default
const provider = new WsProvider('ws://127.0.0.1:9944')
const api = new Api(provider)

async function getChain () {
  return api.system.chain()
}

async function main () {
  const chain = await getChain()

  console.log('You are connected to chain:', chain)
}

main().finally(_ => process.exit())