Blockchain
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Making a dApp that requires ERC20 token data can be tedious since there are numerous tokens, and one needs to query each token contract to get the data. This guide will show how we can build a ERC20 token balance app with QuickNode Token API.
We make use of :
- Node v14 or later.
- Knowledge of HTML, CSS, JavaScript & React.
- Ethers.js (version 5.7) & TailwindCSS libraries.
- A QuickNode Ethereum node with Token API.
- A code editor (i.e., VScode).
- Use the traditional method of fetching ERC20 token data.
- Deploy QuickNode Token API and its different methods.
- Boot a QuickNode Ethereum node with Token API.
- Create a React app to display ERC20 token balances of a particular wallet using QuickNode Token API and Ethers.js library along with Tailwind CSS for styling
The Traditional Way
To get token data like the balance for a specific ERC20 token, it is needed to query the smart contract of that particular token. Multiple smart contracts need to be queried when obtaining data for multiple tokens. In this process, one needs to query the contract with the help of contract ABI; this creates a lot of redundant code, which also needs to be maintained.
QuickNode Token API makes this process very easy and short.
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