Question 1

Is validate.js better than Yup for form validation?

Accepted Answer

validate.js is better for simple, client-side validation in vanilla JavaScript projects, especially if you need IE6 support or a dependency-free library. Yup excels in complex schema validation and integrates more smoothly with modern frameworks like Formik or React Hook Form.

Question 2

How do I add a custom validation rule in validate.js?

Accepted Answer

You can add custom rules by providing a callback function in the validation configuration array. The callback should return true for valid inputs and false for invalid ones, and you can pair it with custom error messages—check the external documentation for detailed examples.

Question 3

Does validate.js work with React?

Accepted Answer

Yes, but it requires manual integration since it's a vanilla JavaScript library. You'll need to handle form events and error display within React's state, unlike validation libraries specifically designed for React that offer hooks and components.

Question 4

What browsers does validate.js support?

Accepted Answer

validate.js supports all major browsers, including legacy versions like IE6, as explicitly stated in the README. This makes it a solid choice for projects that must maintain compatibility with older browser environments.

Question 5

Can I use validate.js with jQuery?

Accepted Answer

Yes, there is a jQuery plugin available (https://github.com/magizh/validate_helper) that simplifies integration, making it easier to bind validation to form elements and handle errors in jQuery-based projects.

Question 6

Is validate.js actively maintained?

Accepted Answer

The main repository shows limited recent activity, and the documentation is hosted externally, suggesting it may not be actively updated. Forks and plugins exist, but for critical applications, consider more actively maintained alternatives like VeeValidate or Joi.

validate.js

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