<wa-mutation-observer>

Mutation observers watch for changes to an element's DOM tree and emit an event when they occur. Provides a thin, declarative interface to the browser's MutationObserver API.

Category

Utilities

Built with

Lit

Library

Web Awesome

Author

Web Awesome

Package

@awesome.me/webawesome

Component size

1.1 kB JS (minified + gzipped, JS includes dependencies beyond the library)

Library size

8.2 kB JS (shared by every Web Awesome component, loaded once per page)

Popular

5 out of 5

Downloads

364,100/week · jsDelivr 33,855,650 hits/month (whole @awesome.me/webawesome package)

GitHub stars

1,348

Latest stable version

3.14.0

Last published

Sep 24, 2026

Component last changed

Feb 4, 2026 (in 3.2.0)

License

MIT

Status

stable

• Documentation
• Demo
• Source code

Attributes

• attr
• attr-old-value
• char-data
• char-data-old-value
• child-list
• disabled
• dir
• lang
• did-ssr

Events

• wa-mutation