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Builders Guide Home
Software Library

Web3.js

by Chainsafe

A flexible and powerful JavaScript/TypeScript library to interact with EVM blockchains
Supported Chains
EVM-logoEVM Chains
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TS and JS logoJavaScript/TypeScript
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Further ReadingsConnect to Ethereum with Web3.jsConnect to Ethereum with Web3.jsarrowGet mempool data with Web3.jsGet mempool data with Web3.jsarrowInteract with smart contracts using Web3.jsInteract with smart contracts using Web3.jsarrow
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value insights

Quick Fact

Web3.js is one of the oldest Ethereum JavaScript libraries.

Web3.js is a comprehensive JavaScript and TypeScript library that facilitates interaction with the Ethereum blockchain. It allows developers to create dApps by providing modules for managing accounts, interacting with smart contracts, and handling transactions and blockchain data.

Comprehensive Ethereum API and Modular Design

Web3.js provides a complete set of APIs for interacting with the Ethereum blockchain, encompassing modules for managing nodes, accounts, smart contracts, and transactions. Its modular design allows developers to include only the necessary packages, minimizing dependencies and enhancing application efficiency.

Flexible Connection Methods and Enhanced Developer Experience

The library supports multiple connection methods to Ethereum nodes, including HTTP, IPC, and WebSocket, allowing developers to choose the most suitable connection for their application needs. Additionally, Web3.js features dynamic contract types, TypeScript support, and custom output formats, which streamline the development process and make building, testing, and deploying blockchain functionalities easier​.

Robust Community Support

As one of the oldest and most widely used Ethereum libraries, Web3.js boasts a large and active community. This extensive community support translates to a wealth of resources, including comprehensive documentation, tutorials, and forums, which are invaluable for troubleshooting and learning. The broad support network helps developers quickly resolve issues and tap into a vast repository of shared knowledge.

Additional Tools by ChainSafe

  • Marketplace

  • NFT Launchpad

  • Web3.unity

Further ReadingsConnect to Ethereum with Web3.jsConnect to Ethereum with Web3.jsarrowGet mempool data with Web3.jsGet mempool data with Web3.jsarrowInteract with smart contracts using Web3.jsInteract with smart contracts using Web3.jsarrow
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