Jaco Greeff
64c5868110
* Return value from array on subscription * Add final round of examples * Use padEnd instead of spaces... * Small cleanups
23 lines
732 B
JavaScript
Executable File
23 lines
732 B
JavaScript
Executable File
// required imports
|
|
const { ApiPromise } = require('@polkadot/api');
|
|
const { WsProvider } = require('@polkadot/rpc-provider');
|
|
|
|
async function main () {
|
|
// initialise the provider to connect to the local node
|
|
const provider = new WsProvider('ws://127.0.0.1:9944');
|
|
|
|
// create the API and wait until ready
|
|
const api = await ApiPromise.create(provider);
|
|
|
|
// retrieve the chain & node information information via rpc calls
|
|
const [chain, nodeName, nodeVersion] = await Promise.all([
|
|
api.rpc.system.chain(),
|
|
api.rpc.system.name(),
|
|
api.rpc.system.version()
|
|
]);
|
|
|
|
console.log(`You are connected to chain ${chain} using ${nodeName} v${nodeVersion}`);
|
|
}
|
|
|
|
main().catch(console.error).finally(() => process.exit());
|