以太坊 JavaScript API

<p align="center"> <img src="assets/logo/web3js.jpg" width="300" alt="web3.js" /> </p> # Web3.js [![Dependency Status][downloads-image]][npm-url]      Web3.js is a TypeScript implementation of the [Ethereum JSON RPC API](https://eth.wiki/json-rpc/API) and related tooling maintained by [ChainSafe Systems](https://chainsafe.io). ## Installation You can install the package either using [NPM](https://www.npmjs.com/package/web3) or using [Yarn](https://yarnpkg.com/package/web3) > If you wanna checkout latest bugfix or feature, use `npm install web3@dev` ### Using NPM ```bash npm install web3 ``` ### Using Yarn ```bash yarn add web3 ``` ## Getting Started - :writing_hand: If you have questions [submit an issue](https://github.com/ChainSafe/web3.js/issues/new/choose) or join us on [Discord](https://discord.gg/yjyvFRP)  ## Prerequisites - :gear: [NodeJS](https://nodejs.org/) (LTS/Fermium) - :toolbox: [Yarn](https://yarnpkg.com/)/[Lerna](https://lerna.js.org/) ## Migration Guide - [Migration Guide from Web3.js 1.x to 4.x](https://docs.web3js.org/guides/web3_upgrade_guide/x/) Breaking changes are listed in migration guide and its first step for migrating from Web3.js 1.x to 4.x. If there is any question or discussion feel free to ask in [Discord](https://discord.gg/yjyvFRP), and in case of any bug or new feature request [open issue](https://github.com/web3/web3.js/issues/new) or create a pull request for [contributions](https://github.com/web3/web3.js/blob/4.x/CONTRIBUTIONS.md). ## Useful links - [Web3 tree shaking support guide](https://docs.web3js.org/guides/advanced/web3_tree_shaking_support_guide/) - [React App Example](https://github.com/ChainSafe/web3js-example-react-app) ## Architecture Overview | Package | Version | License | Docs | Description | | ------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------- | | [web3](https://github.com/ChainSafe/web3.js/tree/4.x/packages/web3) | [](https://www.npmjs.com/package/web3) | [](https://www.gnu.org/licenses/lgpl-3.0) | [](https://docs.web3js.org/api/web3) | :rotating_light: Entire Web3.js offering (includes all packages) | | [web3-core](https://github.com/ChainSafe/web3.js/tree/4.x/packages/web3-core) | [](https://www.npmjs.com/package/web3-core) | [](https://www.gnu.org/licenses/lgpl-3.0) | [](https://docs.web3js.org/api/web3-core) | Core functions for web3.js packages | | [web3-errors](https://github.com/ChainSafe/web3.js/tree/4.x/packages/web3-errors) | [](https://www.npmjs.com/package/web3-core) | [](https://www.gnu.org/licenses/lgpl-3.0) | [](https://docs.web3js.org/api/web3-errors) | Errors Objects | | [web3-eth](https://github.com/ChainSafe/web3.js/tree/4.x/packages/web3-eth) | [](https://www.npmjs.com/package/web3-eth) | [](https://www.gnu.org/licenses/lgpl-3.0) | [](https://docs.web3js.org/api/web3-eth) | Modules to interact with the Ethereum blockchain and smart contracts | | [web3-eth-abi](https://github.com/ChainSafe/web3.js/tree/4.x/packages/web3-eth-abi) | [](https://www.npmjs.com/package/web3-eth-abi) | [](https://www.gnu.org/licenses/lgpl-3.0) | [](https://docs.web3js.org/api/web3-eth-abi) | Functions for encoding and decoding EVM in/output | | [web3-eth-accounts](https://github.com/ChainSafe/web3.js/tree/4.x/packages/web3-eth-accounts) | [](https://www.npmjs.com/package/web3-eth-accounts) | [](https://www.gnu.org/licenses/lgpl-3.0) | [](https://docs.web3js.org/api/web3-eth-accounts) | Functions for managing Ethereum accounts and signing | | [web3-eth-contract](https://github.com/ChainSafe/web3.js/tree/4.x/packages/web3-eth-contract) | [](https://www.npmjs.com/package/web3-eth-contract) | [](https://www.gnu.org/licenses/lgpl-3.0) | [](https://docs.web3js.org/api/web3-eth-contract) | The contract package contained in [web3-eth](https://github.com/ChainSafe/web3.js/tree/4.x/packages/web3-eth) | | [web3-eth-ens](https://github.com/ChainS