Solana: How to implement a wallet button using web3.js v2

Implementing a Wallet Button with Web3.js v2 on Solana

After successfully building your SvelteKit + @solana/wallet-adapter-base and @solana/wallet-adapter-phantom frontend dapp on Solana, it’s time to migrate to Web3.js v2 for improved security, performance, and compatibility with the latest Solana wallet adapters. In this article, we’ll explore how to implement a wallet button using web3.js v2.

Prerequisites

• Make sure you have the following installed:

+ SvelteKit (v3 or later)

+ @solana/wallet-adapter-base

+ @solana/wallet-adapter-phantom

+ Web3.js v2

• Create a new Solana wallet on your local machine using the solana-keygen command.

• Install the required packages in your SvelteKit project:

npm install @solana/wallet-adapter-base@latest @solana/wallet-adapter-phantom

Create a new wallet button component

In your SvelteKit component, create a new file components/WalletButton.svelte and add the following code:

 useWallet().connect()}>Connect Wallet

Implementing the Wallet Button

In this example, we are using SvelteKit’s useWallet hook to connect to your Solana wallet. When the button is clicked, it will call the connect() method on the wallet object, which will initialize the wallet and display a connection status.

Migrating to Web3.js v2

To use web3.js v2, you’ll need to install the web3 package in your SvelteKit project:

npm install web3@latest

Then, update your components/WalletButton.svelte file to use web3 instead of solana-keygen:

 useWeb3().connect()}>Connect Wallet

Update Wallet button to display Web3 status

You can add a custom function to display the wallet status:

 useWeb3().connect()}>Connect Wallet

This is a basic example to get you started. You can customize the wallet button to display any information you want, such as the wallet balance or list of connected addresses.

Conclusion

By following this article, you have successfully implemented a wallet button using web3.js v2 on Solana. This migration will improve security, performance, and compatibility with the latest wallet adapters. Remember to update all instances of solana-keygen and web3 in your SvelteKit project to use web3.js v2.

Example Use Case

Here’s an example of how you can use this wallet button in a simple Solana dapp:

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