A JavaScript implementation of a web browser without its graphical user interface.

Documentation | Getting started | Setup as Test Environment

## DOM Features - Custom Elements (Web Components) - Declarative Shadow DOM - Mutation Observer - Tree Walker - Fetch API And much more.. ## Works With - [Vitest](https://vitest.dev/) - [Bun](https://bun.sh) - [Jest](https://jestjs.io/) - [Testing Library](https://testing-library.com/) - [Google LitElement](https://lit.dev/) - [Vue](https://vuejs.org/) - [React](https://reactjs.org) - [Svelte](https://svelte.dev/) - [Angular](https://angular.dev/) ## Sponsors

Gold Sponsors

Sponsors

Backers

## Contributing See [Contributing Guide](https://github.com/capricorn86/happy-dom/blob/master/docs/contributing.md). ## License MIT License © 2019-Present [David Ortner](https://github.com/capricorn86)