How can I create custom validation rules in VeeValidate for Vue 3?

How can I create custom validation rules in VeeValidate for Vue 3?

To create custom validation rules in VeeValidate for Vue 3, you can use the defineRule function. This allows you to define your own validation logic.

Can you show me an example of a custom rule?

Sure! Here's a simple example: defineRule('isEven', value => value % 2 === 0 || 'The number must be even.'); This rule checks if a number is even.

How do I apply this custom rule to a form field?

You can apply it by using the v-model directive on your input and adding the rules prop like this: <input v-model='number' v-validate='isEven' />.

What if I want to add multiple rules to a field?

You can combine rules by separating them with a pipe: v-validate='isEven|required' to ensure the field is both even and required.