# parity.js JavaScript APIs and UIs for Parity. ## development 0. Install [Node](https://nodejs.org/) if not already available 0. Change to the `js` directory inside `parity/` 0. Install the npm modules via `npm install` 0. Parity should be run with `parity --ui-no-validation [...options]` (where `options` can be `--chain testnet`) 0. Start the development environment via `npm start` 0. Connect to the [UI](http://localhost:3000)