DOM Implementation
- domutils:
domutilsoffers a minimalistic approach to DOM manipulation, focusing on efficiency and simplicity. It does not provide a full DOM implementation but rather a set of utilities for working with existing DOM structures, making it lightweight and fast. - jsdom:
jsdomprovides a complete and standards-compliant implementation of the DOM, including support for HTML, XML, and SVG. It mimics the behavior of a real web browser, allowing for accurate testing and manipulation of DOM elements, attributes, and events.
Event Handling
- domutils:
domutilsdoes not provide built-in event handling features, as it is primarily focused on DOM manipulation and traversal. For event handling, developers would need to implement their own logic or use additional libraries. - jsdom:
jsdomsupports a wide range of event handling capabilities, including the ability to create, dispatch, and listen for events just like in a real browser. This makes it suitable for testing event-driven code and simulating user interactions.
Use Cases
- domutils:
domutilsis best suited for lightweight web scraping, data extraction, and simple DOM manipulation tasks. Its efficiency and low overhead make it a great choice for projects that do not require a full DOM implementation. - jsdom:
jsdomis ideal for testing frameworks, server-side rendering, and applications that require a realistic DOM environment. It is widely used in automated testing, web scraping, and any scenario where a full DOM implementation is needed outside of a browser.
Performance
- domutils:
domutilsis designed for high performance with minimal resource usage. Its lightweight nature allows for fast DOM manipulation and traversal, making it ideal for applications where speed and efficiency are critical. - jsdom:
jsdomis relatively heavy compared to lightweight DOM manipulation libraries due to its comprehensive feature set. However, it is optimized for performance and provides a good balance between functionality and speed, making it suitable for most applications.
Example Code
- domutils:
Example of
domutilsDOM Manipulationconst { parse } = require('domutils'); const html = '<ul><li>Item 1</li><li>Item 2</li></ul>'; const dom = parse(html); // Manipulating the DOM const firstItem = dom[0].children[0]; firstItem.children[0].data = 'Updated Item 1'; console.log(dom); - jsdom:
Example of
jsdomDOM Manipulationconst { JSDOM } = require('jsdom'); const { document } = (new JSDOM(`<!DOCTYPE html><p>Hello world</p>`)).window; // Manipulating the DOM const p = document.querySelector('p'); p.textContent = 'Hello from jsdom!'; console.log(p.textContent); // Output: Hello from jsdom!
