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mdn/web-components-examples resource

A series of web components examples, related to the MDN web components documentation at https://developer.mozilla.org/en-US/docs/Web/Web_Components. observed · 2026-08-28

github.com/mdn/web-components-examples · JavaScript · CC0-1.0 (permissive) observed · 2026-08-28

Health v2 · maintenance only

60/100

  • Activity 62
  • Release rhythm 35
  • Longevity 100

Flags: no_releases

How is this computed?

round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.

  • gap_med: n/a
  • age_days: 3188
  • days_rel: n/a
  • days_push: 232
  • n_releases_24m: 0

Full methodology

Adoption not part of the score

3371 stars · 822 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

A collection of example web components accompanying the MDN Web Components documentation, demonstrating custom elements, shadow DOM, templates, slots, and lifecycle callbacks. Each example is a small standalone component with a live demo.

Use cases

  • learn how to build web components
  • see examples of custom elements with shadow DOM
  • understand web component lifecycle callbacks
  • find reference implementations of editable list or editable word components
  • study how slots and templates work in custom elements
  • teach web components in a frontend course

When to choose

  • you are learning or teaching web components from MDN docs
  • you want small, clear reference implementations of custom element patterns
  • you need runnable demos of shadow DOM, slots, and lifecycle callbacks

When to avoid

  • you need a production-ready web component library or framework
  • you want polished, feature-complete UI components for an app
  • you need a build system or tooling around web components

Facets

learning-resource · maturity active

ui-components developer-tools documentation web-development frontend tutorials browser web-components custom-elements shadow-dom mdn examples javascript web

1 source

Member repositories

RepositoryRoleHealth v2
mdn/web-components-examplesmain60

For agents

markdown · JSON · MCP: product_card(name="mdn/web-components-examples")

Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem