happy-dom | Npm Package Usage Trend

happy-dom

Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. It includes many web standards from WHATWG DOM and HTML.

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## Usage Trend
[![Usage Trend of happy-dom](https://npm-compare.com/img/npm-trend/THREE_YEARS/happy-dom.png)](https://npm-compare.com/happy-dom#timeRange=THREE_YEARS)

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## GitHub Stars Trend
[![GitHub Stars Trend of happy-dom](https://npm-compare.com/img/github-trend/happy-dom.png)](https://npm-compare.com/happy-dom)

Package	Downloads	Stars	Size	Issues	Publish	License

happy-dom	2,992,124	4,083	8.02 MB	260	2 days ago	MIT

happy-dom

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

DOM Features

Custom Elements (Web Components)
Declarative Shadow DOM
Mutation Observer
Tree Walker
Fetch API

And much more..

Documentation

Documentation | Getting Started | Setup as Test Environment | GitHub

Works With

Module Systems

ESM | CommonJS

Performance

| Operation | JSDOM | Happy DOM | | ------------------------------------ | ------- | --------- | | Import / Require | 333 ms | 45 ms | | Parse HTML | 256 ms | 26 ms | | Serialize HTML | 65 ms | 8 ms | | Render custom element | 214 ms | 19 ms | | querySelectorAll('tagname') | 4.9 ms | 0.7 ms | | querySelectorAll(':nth-child(2n+1)') | 10.4 ms | 3.8 ms |

See how the test was done here