https://github.com/scriptex/html5-form-validator

The simplest HTML5 forms validator
https://github.com/scriptex/html5-form-validator

form-validation html5 html5-forms validation validator

Last synced: 10 months ago
JSON representation

The simplest HTML5 forms validator

• Host: GitHub
• URL: https://github.com/scriptex/html5-form-validator
• Owner: scriptex
• License: mit
• Created: 2017-11-26T12:42:41.000Z (about 8 years ago)
• Default Branch: master
• Last Pushed: 2025-03-10T05:11:31.000Z (11 months ago)
• Last Synced: 2025-03-18T04:42:43.067Z (10 months ago)
• Topics: form-validation, html5, html5-forms, validation, validator
• Language: TypeScript
• Homepage: https://html5-form-validator.atanas.info
• Size: 978 KB
• Stars: 5
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE

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# HTML5 Form Validator

> The simplest HTML5 forms validator.

This form validator uses the **built-in capabilities** of the browser to validate the required form fields.

All validation messages are shown as they are shown by the browser which means that they are **internationalized** and are **NOT subject to change**.

## Visitor stats

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## Code stats

![GitHub code size in bytes](https://img.shields.io/github/languages/code-size/scriptex/html5-form-validator)

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## Install

```sh

npm i html5-form-validator

```

or

```sh

yarn add html5-form-validator

```

## Usage

```javascript

import { HTML5FormValidation } from 'html5-form-validator';

```

Then initialize with default settings:

```javascript

new HTML5FormValidation();

```

or supply your own

```javascript

const form = document.querySelector('#form');

new HTML5FormValidation(form, {

	errorElement: 'form__error',

	invalidClass: 'is--invalid',

	submitHandler(instance) {

		console.log(instance);

	},

	validateOnInput: false

});

```

## Options

| Option            | Type       | Required | Default     | Description                                                                                         |

| ----------------- | ---------- | -------- | ----------- | --------------------------------------------------------------------------------------------------- |

| `errorElement`    | `string`   | false    | `'error'`   | The class name of the element that will be added to the DOM after the required field.               |

| `invalidClass`    | `string`   | false    | `'invalid'` | The classname of the required field when it is invalid                                              |

| `submitHandler`   | `Function` | false    | `null`      | A function to run on form submission. Accepts a single argument - the HTML5FormValidation instance. |

| `validateOnInput` | `boolean`  | false    | `true`      | Validate as you type. Set to `false` to validate only on submit.                                    |

## LICENSE

MIT

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