This is the Ethereum JavaScript API which connects to the Generic JSON RPC spec.
You need to run a local or remote Ethereum node to use this library.
Please read the documentation for more.
npm install web3yarn add web3importWeb3from'web3';constweb3=newWeb3('ws://localhost:8546');console.log(web3);>{eth: ...,shh: ...,utils: ...,
...
}Additionally you can set a provider using web3.setProvider() (e.g. WebsocketProvider)
web3.setProvider('ws://localhost:8546');// orweb3.setProvider(newWeb3.providers.WebsocketProvider('ws://localhost:8546'));There you go, now you can use it:
web3.eth.getAccounts().then(console.log);We do support types within the repo itself. Please open an issue here if you find any wrong types.
You can use web3.js as follows:
importWeb3from'web3';constweb3=newWeb3("ws://localhost:8546");Documentation can be found at read the docs
- All contributions have to go into the 1.0 branch
- Please follow the code style of the other files, we use 4 spaces as tabs.
- Node.js
- npm
npm run clean // removes all the node_modules folders in all modules
npm run bootstrap // install all dependencies and symlinks the internal modules for all modules
npm run test // runs all tests npm run build // runs rollup
npm run dev // runs rollup with a watcher
- Python Web3.py
- Haskell hs-web3
- Java web3j
- Scala web3j-scala
- Purescript purescript-web3
- PHP web3.php