# keithclark/selectivizr

selectivizr is a JavaScript utility that emulates CSS3 pseudo-classes and attribute selectors in Internet Explorer 6-8.

Repository: https://github.com/keithclark/selectivizr
Canonical: https://ross.abutalabs.com/products/selectivizr
Language: JavaScript
License Family: other
Last push: 2017-02-18T05:58:26+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5696, "days_push": 3483, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1689, forks 241 (observed 2026-08-28T04:05:22.435488+00:00)

## What it is
selectivizr is a JavaScript utility that emulates CSS3 pseudo-classes and attribute selectors in Internet Explorer 6-8. It works alongside a supported DOM library such as jQuery, MooTools, or Prototype and is loaded via conditional comments only for legacy IE browsers.

## Use cases
- support css3 selectors in internet explorer 6-8
- make :nth-child and other pseudo-classes work in old ie
- polyfill attribute selectors for legacy ie users
- apply modern css styling to ie6-ie8 without rewriting stylesheets
- gracefully degrade css for old browsers with a fallback stylesheet

## When to choose
- you must support Internet Explorer 6-8 and want CSS3 selector support
- your project already uses jQuery, MooTools, Prototype, Dojo, YUI, DOMAssistant, or NWMatcher

## When to avoid
- you only target modern browsers with native CSS3 support
- you don't use any of the supported JavaScript DOM libraries
- you need a maintained solution - the project has had no releases since 2017

## Facets
- artifact type: library
- maturity: abandoned
- function: ui-components, developer-tools
- domain: web-development, frontend
- platform: browser
- tags: css3, internet-explorer, polyfill, selectors, legacy-browser

## Member repositories
- keithclark/selectivizr (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:22.435488+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 2026-08-30T03:38:41.036442+00:00, confidence not recorded.
  - readme: https://github.com/keithclark/selectivizr (fetched 2026-08-28T04:05:22.435488+00:00, sha 8433001df04a)
- Data as of 2026-08-30T08:39:29.467469+00:00.