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.
Package: happy-dom
Created by: capricorn86
Last modified: Sun, 07 Apr 2024 15:20:38 GMT
Version: 14.7.1
License: MIT
Downloads: 2,883,106
Repository: https://github.com/capricorn86/happy-dom
Install
npm install happy-dom
yarn add 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
Vitest | Bun | Jest | Testing Library | Google LitElement | Vue | React | Svelte | Angular
Module Systems
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
