# wilddeer/stickyfill

Polyfill for CSS `position: sticky`

Repository: https://github.com/wilddeer/stickyfill
Canonical: https://ross.abutalabs.com/products/stickyfill
Language: HTML
License: MIT
License Family: permissive
Topics: polyfill, sticky-elements, position-sticky, scrolling, scroll
Last push: 2020-10-07T15:37:28+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4473, "days_push": 2156, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2271, forks 246 (observed 2026-08-28T04:06:33.139587+00:00)

## What it is
Stickyfill is a JavaScript polyfill that emulates CSS `position: sticky` in browsers lacking native support, working in IE9+ and disabling itself where sticky is natively implemented. It is now unmaintained because all modern browsers support `position: sticky` natively.

## Use cases
- make sidebar elements stick while scrolling in old browsers
- polyfill position sticky for IE9+
- keep a header pinned to the top of the viewport on scroll
- support sticky elements in legacy browser environments
- emulate sticky positioning without parsing CSS

## When to choose
- you must support legacy browsers like IE9-11 that lack native position: sticky
- you need the most accurate sticky polyfill with native-like top and margin behavior

## When to avoid
- you only target modern browsers, which all support position: sticky natively
- you need left, right, bottom, or combined sticky positioning
- your sticky elements live inside overflowed blocks
- you want an actively maintained dependency

## Facets
- artifact type: library
- maturity: abandoned
- function: ui-components, animation
- domain: web-development, frontend
- platform: browser, cross-platform
- tags: polyfill, position-sticky, css, scrolling, unmaintained

## Member repositories
- wilddeer/stickyfill (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:33.139587+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:41:48.818031+00:00, confidence not recorded.
  - readme: https://github.com/wilddeer/stickyfill (fetched 2026-08-28T04:06:33.139587+00:00, sha e5c43bdfb82e)
- Data as of 2026-08-30T08:39:29.467469+00:00.