AvalancheJS is a JavaScript library for building dApps on Avalanche®. AvalancheJS enables interactions with Avalanche APIs and has a modular library architecture, allowing for custom virtual machines to write plugins to extend AvalancheJS’s functionality. The library has helped hundreds of thousands of developers with building Web3 front-ends for Avalanche and Avalanche Subnets.
The APIs currently supported by default are:
Admin API
Auth API
AVM API (X-Chain)
EVM API (C-Chain)
Health API
Index API
Info API
Keystore API
Metrics API
PlatformVM API
Socket API
We built AvalancheJS with ease of use in mind. With this library, any Javascript developer is able to interact with a node on the Avalanche Platform that has enabled their API endpoints for the developer’s consumption. We keep the library up-to-date with the latest changes in the Avalanche Platform Specification found in the Platform Chain Specification, Exchange Chain (X-Chain) Specification, and Contract Chain (C-Chain) Specification.
Using AvalancheJS, developers can:
Locally manage private keys
Retrieve balances on addresses
Get UTXOs for addresses
Build and sign transactions
Issue signed transactions to the X-Chain, P-Chain, and C-Chain on the Primary network
Create a Subnetwork
Swap AVAX and assets between the X-Chain, P-Chain, and C-Chain
Add a Validator to the Primary network
Add a Delegator to the Primary network
Administer a local node
Retrieve Avalanche network information from a node
Requirements
AvalancheJS requires Node.js version 14.18.0 or higher to compile.
For any additional questions, please view our other knowledge base articles or contact a support team member via the chat button. Examples are for illustrative purposes only.