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







<a href="https://www.npmjs.com/package/happy-dom">
    <img alt="Published on NPM" src="https://img.shields.io/npm/v/happy-dom.svg">
</a>







<a href="https://github.com/capricorn86/happy-dom/wiki/">Documentation</a> | <a href="https://github.com/capricorn86/happy-dom/wiki/Getting-started">Getting started</a> | <a href="https://github.com/capricorn86/happy-dom/wiki/Setup-as-Test-Environment">Setup as Test Environment</a>

DOM Features

• Custom Elements (Web Components)

• Declarative Shadow DOM

• Mutation Observer

• Tree Walker

• Fetch API

And much more..

Works With

• Vitest
• Bun
• Jest
• Testing Library
• Google LitElement
• Vue
• React
• Svelte
• Angular

Sponsors

Sponsors

<a href="https://sentry.io/"><img alt="Sentry" width="50px" src="https://avatars.githubusercontent.com/u/1396951?s=200&v=4"></a>
&nbsp;&nbsp;
<a href="https://canonical.com/"><img alt="Canonical" width="50px" src="https://avatars.githubusercontent.com/u/53057619?s=200&v=4"></a>

Backers

<a href="https://sourcegraph.com/"><img alt="Sourcegraph" src="https://images.weserv.nl/?url=avatars.githubusercontent.com/u/3979584?v=4&h=40&w=40&fit=cover&mask=circle&maxage=7d"></a>
&nbsp;&nbsp;
<a href="https://github.com/andykenward"><img alt="andykenward" src="https://images.weserv.nl/?url=avatars.githubusercontent.com/u/4893048?v=4&h=40&w=40&fit=cover&mask=circle&maxage=7d"></a>
&nbsp;&nbsp;
<a href="https://github.com/raystubbs"><img alt="raystubbs" src="https://images.weserv.nl/?url=avatars.githubusercontent.com/u/7083791?v=4&h=40&w=40&fit=cover&mask=circle&maxage=7d"></a>

Contributing

See Contributing Guide.

License

MIT License © 2019-Present David Ortner