Solana: Basic examples how to use solana web3.js version 2.x and above

Solana Web3.js Version 2.x and Later: A Beginner’s Guide

As a TypeScript developer, you’re probably familiar with the basics of Solana blockchain programming. However, if you’re new to Web3.js, the official library for interacting with the Solana network, things can quickly get confusing. In this article, we’ll walk you through some basic examples of using Solana Web3.js version 2.x and later.

Installing the Library

Before we dive into the code, make sure you have the latest version of the Solana CLI installed on your machine. You can install it using npm:

npm install solana-cli @solana/web3js

Setting up a new cluster

To use Web3.js with a new cluster, create an .env file in the root directory and add your cluster’s private key as follows:

SOLANA_KEY=private-key-of-your-cluster

Replace your-cluster-private-key with your actual Solana cluster private key.

Connect to cluster

Create a new JavaScript file (eg main.ts) and import the web3.js library. To connect to the cluster, you must use the `salana'' object:

import { web3 } from '@solana/web3js';
const cluster = new web3.WebsocketCluster({
url: 'wss://url-of-your-cluster',
});
// Generate a key pair for your account
asynchronous function generateKeyPair() {
const keyPath = process.env.SOLANA_KEY;
const key = await web3.generateKeypairs(keyPath);
return { key, cluster };
}
const { key, cluster } = await generateKeyPair();

Use the web3object to create a new account:

asynchronous function createAccount() {
try {
const account = await web3.account.createAccount(key);
console.log(Account created: ${account.publicKey.toString()});
} catch (error) {
console.error(error);
}
}

To stake your account, use the web3object to send a transaction:

asynchronous function stake() {
try {
const transaction = await web3.account.stakeAccount(key, { amount: '10' });
console.log(Staked ${transaction.amount} token);
} catch (error) {
console.error(error);
}
}

To unlock your account, use the web3object to send a transaction:

asynchronous function unlock() {
try {
const transaction = await web3.account.unlockAccount(key);
console.log(Unlocked account: ${transaction.publicKey.toString()});
} catch (error) {
console.error(error);
}
}

To interact with smart contracts, use the web3` object to send transactions and execute functions:

asynchronous function deployContract() {
try {
const contract = await web3.eth_contract.createContract({
contractAddress: '0x...Your contract address...',
accounts: ['your-account-key'],
bytecode: '0x...Contract bytecode...',
});
console.log('Contract secured');
} catch (error) {
console.error(error);
}
}

First steps

With this basic example, you should be able to get started with Solana Web3.js version 2.x and above. Don’t forget to replace the placeholders with your actual cluster details.

If you encounter any problems or have any questions, feel free to ask!

Resources:

• Official [Solana Web3.js Documentation](

• [Solana CLI Documentation](

• [Web3.js GitHub Repository](