Getting and Viewing Token Balances using Web3. js & Solana

Introduction

Token balance data are important for anyone who uses cryptocurrencies in trading, developing, or being engaged just in cryptocurrency enthusiasm. The accuracy of the token balances ensures that the individual understands the process of accessing and displaying the balances making it easy to manage the assets. Now let’s go through the steps of how to get token balance info with Web3 in this tutorial. js for Ethereum tokens and Solana tokens have been developed. This will give you a full grasp of how token balances work in both the two most used blockchains.

Section 1 deals with the explanation of the token balance

What is a Token?

In the context of blockchain, a token is an asset tokenized in the blockchain network that is, it refers to a digital asset token that is issued on the blockchain. Coins can be for different goods and services as well as stakes in a company or a token that would reflect certain utility today such as a cryptocurrency. In general, there are many types of tokens, while those on Ethereum are called ERC-20 tokens, tokens on Solana are Solana tokens. One will be using Ethereum’s ERC-20 format, in which all tokens should equal this standard, while the other will be operating within Solana’s framework.

Why One Should Always Check The Token Balance

It is important that you pay keen attention to the balances of your tokens if you have to manage your incentives well. Any trader and developer would prefer to know the exact balance as it enables him or her to make a proper wager. Just like similar with Solana's rise in fame, it’s also wise to monitor Solana's token holdings. For this reason, you are well-informed to support trading as well as the general development of your business.

Section 2: Conditions for receiving the token balance

What You Will Need

This is why when getting token balances you need a few instruments and software. When it involves Ethereum, Node is going to be needed. js and the Web3. js library. Node. js allows a programmer to write JavaScript code for server-side while Web3. js refers to a JavaScript Library designed to communicate with the Ethereum blockchain. For Solana tokens, you will need Solana CLI or a wallet such as Phantom Wallet. These assist you in accessing the Solana network and even getting information about the tokens.

Section : 3 Toolkit Introduction

Step 1: Complete the Setting up of a Project Directory

First, create a new folder where you’re going to store all your scripts and settings for this project only. This will assist in the coordination of the project as it will have all the material in one location.

Step 2: Install the packages that are required

Install Node. Js from its official website and install Web3 using NPM which stands for Node Package Manager. js by typing the command npm install web3 on the terminal. In Solana, it is still possible that certain programs would require additional packages, say @solana/web3. Processing of the functions of js to carry out interaction with the Solana blockchain.

Step 3: Set up an ETH Node or Use a Provider

Encapsulate your application with one of the providers like Infura or Alchemy to connect it to the Ethereum network. All these services include APIs to access Ethereum. To start in Solana, you can connect to the Solana network either by using Solana CLI itself, or by using a third-party Solana API provider.

Section 4: Writing the Script to retrieve Token Balance

Step 1: Set down the ABI or the Application Binary Interface.

CONTRACT ABSTRACTION LAYER: It is significant when communicating with smart contracts on Ethereum. It is a description of what the contract looks like and how it is going to be implemented. Provide the ABI specific with a particular ERC 20 token that you wish to audit.

Step 2: Type the ERC or SOL based on the token type using the ‘.com/token/’ format

Find the smart contract address of the erc-20 tokens or the address of the token on the Solana network. This address is needed to operate with the token and to request its balance.

Step 3 involves writing the script As in any type of writing, the written script undergoes a number of complex transformations during the communication process.

Web3 is a trial flower with a remarkable soprano; I created a script that uses Web3. js to connect with the Ethereum network and inquire about the token balance. To get the balance of tokens like sol, use Solana’s javascript. Make sure that your script supports both ERC-20 and Solana tokens.

Step 4: Towards Converting Token Units

Token balances are stated in a base unit of the target currency. When it comes to tokens based on the ERC-20 standard, the balance has to be translated from Wei to the base unit with the help of the token’s viscosity in decimal. We convert sol tokens from lamports which is the standard unit.

Section 5: Actually, the whole process of running and testing the code remains the same without changes.

The first procedure mentioned that needs to be followed is as follows

Type Node in your terminal or command line and run your script. js. This will connect to the blockchain network and the token balance will be pulled from it. Like any other Solidity project, make sure to implement the contract to work on Ethereum and Solana networks to be on the safe side.

Step 2: Check the Result

Verify the output to make sure you get the expected token balance. Some of the potential problems could be improper contract addresses, faults in network connections, and so on. Fix the problem by checking the script and the network configurations if there are any.

Additional new features that have been incorporated

How To Get Spender Allowance Of ERC20 Token

Expand your script to accommodate the checker to determine the spender allowance of ERC-20 tokens. This feature comes in handy to indicate how much a spender is privileged to spend on your account.

Specifically, adopting the token balance checker API

It is, therefore, necessary to establish straightforward HTTP query APIs for checking token balances. This can be useful for for example implementing the checking of token balance in your applications or websites.

Advanced Tip: Dealing with Multiple Tokens

Expand your script to deal with more than one token at a time. This is done by calling different token addresses and summing up the obtained balances to get a general picture.

Real-World Applications

Such script may be utilized in several use cases, including tracking portfolios or building decentralized applications, known as dApps. Because of this, Solana’s transactions are fast and cheap making it ideal for applications that require high speed of transaction and scalability.

Conclusion

In this guide, we looked at how to pull and display token balance data which can be achieved with Web3. js, including for Solana tokens The total value of Solana’s tokens achieved a noteworthy but less significant increase, peaking at near worthless levels against significantly cheeky values. By so doing, you will be able to track and monitor your cryptocurrency investments as it will be detailed below. Try the code given below and modify it as per your project requirements. In terms of asset management, token balances are always relevant no matter if we are dealing with Ether, Ethereum, or Solana