Svelte Formula

screenshot of Svelte Formula

Svelte Formula

Zero-Configuration Reactive forms for Svelte


The Svelte Formula is a library for creating reactive forms in Svelte applications. It enhances the ability to create rich, data-driven applications by providing Zero Configuration reactive form components. With Formula, all you need is a well-defined HTML5 form element and the library takes care of creating reactive stores for data and form states.


  • Zero Configuration: Formula requires only a well-defined HTML5 form element to create fully reactive stores of data and form states.
  • Support for Various Input Types: Formula supports single and multi-value inputs for all widely supported HTML inputs. It also extends support to checkbox groups, radio groups, and composite fields of values like text or number.
  • Customizable Validation: Formula allows for form and field level validations, which integrate with the in-built browser validations. Custom validation messages can also be provided for localization.
  • Lifecycle Methods: Formula provides additional lifecycle methods for dynamically adding and removing customizations, and for resetting or destroying the form.
  • Accessibility: Formula attempts to apply ARIA attributes to improve accessibility.


To install the Svelte Formula library, run the following command:

npm i svelte-formula


The Svelte Formula is a powerful library for creating reactive forms in Svelte applications. It simplifies the process by providing Zero Configuration reactive form components and supports various input types. The library also offers customization options for validation and enrichment of user input. Additionally, it provides lifecycle methods for managing dynamic changes to the form and enhances accessibility through the inclusion of ARIA attributes.


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