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The Web3 library provides quick access to JSON-RPC methods that allow you to interact with the blockchain through a Web3 connection endpoint such as: SolarPath (or build your own node).
The Web3 library can quickly build a front-end that communicates with the blockchain (including smart contracts deployed on the blockchain).
Web3 libraries are available for various blockchains such as: matic.js for the Polygon network. This topic focuses on the Ethereum network, but the fundamentals are the same for other blockchains.
Some popular Ethereum-compatible Web3 libraries (including but not limited to) are listed below: