Đọc dữ liệu từ mạng lưới

import { Keypair, Connection, LAMPORTS_PER_SOL } from "@solana/web3.js";

const keypair = Keypair.generate();
console.log(`Public Key: ${keypair.publicKey}`);

const connection = new Connection("http://localhost:8899", "confirmed");

// Funding an address with SOL automatically creates an account
const signature = await connection.requestAirdrop(
  keypair.publicKey,
  LAMPORTS_PER_SOL
);
await connection.confirmTransaction(signature, "confirmed");

const accountInfo = await connection.getAccountInfo(keypair.publicKey);
console.log(JSON.stringify(accountInfo, null, 2));

import { Connection, PublicKey } from "@solana/web3.js";

const connection = new Connection(
  "https://api.mainnet-beta.solana.com",
  "confirmed"
);
const address = new PublicKey("TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA");
const accountInfo = await connection.getAccountInfo(address);

console.log(

import { Connection, PublicKey } from "@solana/web3.js";

const connection = new Connection(
  "https://api.mainnet-beta.solana.com",
  "confirmed"
);

const address = new PublicKey("EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v");
const accountInfo = await connection.getAccountInfo(address);

console.log(

import { PublicKey, Connection } from "@solana/web3.js";
import { getMint } from "@solana/spl-token";

const connection = new Connection(
  "https://api.mainnet-beta.solana.com",
  "confirmed"
);

const address = new PublicKey("EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v");
const mintData = await getMint(connection, address, "confirmed");

console.log(