JS Validator

Laravel-style validation, in the browser, with zero dependencies.

If you already know Laravel's validation rules, you already know this library. Same rule syntax, same mental model — running client-side, with no framework and nothing to install alongside it.

import Validator from 'innoboxrr-js-validator';

const v = new Validator(form, {
  email:    'required|email',
  password: 'required|min:8|confirmed',
  age:      'required|numeric|between:18,99',
});

if (v.fails()) {
  console.log(v.errors());
}

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Why

Duplicating validation rules between the backend and the frontend is where bugs hide — the two drift, and users get rejected by the server for something the form said was fine.

Keeping one rule syntax across both sides means the rules stay readable as a pair, and a rule copied from a Laravel FormRequest works unchanged in the browser.

Zero dependencies	No framework, no build step required. Drop it in.
Familiar syntax	required, email, min, max, between, confirmed, regex, and more.
Custom rules	Register your own with a function and a message.
Localised messages	Override any message; ships ready for multi-language forms.

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Install

npm install innoboxrr-js-validator

Or include the bundle directly and use the global Validator.

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Built by

Innobox R&R — extracted from production forms. Part of a catalogue of 52 open-source packages on Packagist and npm.

innobox.systems