What are the best practices for using validators in Vue 3?

What are the best practices for using validators in Vue 3?

When using validators in Vue 3, it's important to keep your validation logic clean and reusable. You can create custom validation functions and use them in your components.

Can you give me an example of a custom validator?

Sure! Here's a simple example: you can create a validator that checks if a value is an email. You would define a function like this:

function emailValidator(value) {
  const regex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
  return regex.test(value);
}

How do I integrate this validator into my Vue component?

You can integrate it by using the v-model directive along with the @blur event to trigger validation. For example:

<input v-model="email" @blur="validateEmail" />

What if I want to show error messages?

You can use a data property to track the error state and display a message conditionally. For example:

<span v-if="emailError">Invalid email address.</span>