# guillaumepotier/Parsley.js

Validate your forms, frontend, without writing a single line of javascript

Repository: https://github.com/guillaumepotier/Parsley.js
Canonical: https://ross.abutalabs.com/products/parsleyjs
Homepage: http://parsleyjs.org
Language: JavaScript
License: MIT
License Family: permissive
Last push: 2026-05-26T07:48:32+00:00

## Health v2 (maintenance only)
Score: 61/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 84, release rhythm 8, longevity 100
- inputs: {"age_days": 5008, "days_push": 99, "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 8979, forks 1274 (observed 2026-08-28T04:10:26.601303+00:00)

## What it is
Parsley.js is a JavaScript form validation library that lets you validate forms entirely through HTML data attributes without writing JavaScript. It requires jQuery and provides a dozen-plus built-in validators with extensive customization options.

## Use cases
- validate html forms without writing javascript
- frontend form validation with data attributes
- give users instant feedback before form submission
- add required field and email format checks to a form
- dynamically validate forms as fields are added or removed
- reduce server load by validating forms client-side

## When to choose
- you use jQuery and want declarative, attribute-based form validation
- you need a mature, stable, well-tested validation library
- you want extensive built-in validators with UX-focused customization

## When to avoid
- you are building a modern framework app (React, Vue) with its own form ecosystem
- your project does not use jQuery
- you need a library with active feature development

## Facets
- artifact type: library
- maturity: maintenance
- function: form-handling, frontend-framework, ui-components
- domain: web-development, frontend, developer-tools
- platform: browser
- tags: form-validation, dom-api, data-attributes, jquery-plugin, ux, forms, javascript, jquery

## Member repositories
- guillaumepotier/Parsley.js (main) score 61

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:26.601303+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 2026-08-29T17:24:24.738679+00:00, confidence not recorded.
  - readme: https://github.com/guillaumepotier/Parsley.js (fetched 2026-08-28T04:10:26.601303+00:00, sha 671767fca72a)
  - homepage: http://parsleyjs.org (fetched 2026-08-29T08:24:48.434388+00:00, sha 6665250462c5)
  - site_page: http://parsleyjs.org/doc/about.html (fetched 2026-08-29T08:24:48.447365+00:00, sha a29e0086d9b4)
  - site_page: http://parsleyjs.org/doc/index.html (fetched 2026-08-29T08:24:48.443793+00:00, sha 0cf3c53ca8f5)
- Data as of 2026-08-30T08:39:29.467469+00:00.