Introduction to 'vee validate vue 3'

'vee validate vue 3' is a library that provides flexible and powerful form validation for Vue.js 3 applications. It simplifies the process of validating form inputs, providing automatic error messages that appear when a user enters invalid data. This library saves a lot of time and effort in writing custom form validation logic for every form in your application.

Installation

To use 'vee validate vue 3' in your Vue.js 3 application, you first need to install it using NPM or Yarn.

npm install vee-validate@next --save

or

yarn add vee-validate@next

Once installed, you need to register it with Vue.js in your main.js file as shown below:

import { createApp } from 'vue'
import { Field, Form, ErrorMessage } from 'vee-validate'
import App from './App.vue'

const app = createApp(App)

app.component('Field', Field)
app.component('Form', Form)
app.component('ErrorMessage', ErrorMessage)

app.mount('#app')

Usage

Once installed and registered, you can start using 'vee validate vue 3' in your forms. Below is an example of how to use the library to validate a simple form:

<template>
  <Form @submit.prevent="onSubmit">
    <label for="name">Name</label>
    <Field
      name="name"
      type="text"
      :rules="{ required: true, min: 3 }"
    />
    <ErrorMessage name="name" />

    <label for="email">Email</label>
    <Field
      name="email"
      type="email"
      :rules="{ required: true, email: true }"
    />
    <ErrorMessage name="email" />

    <button type="submit">Submit</button>
  </Form>
</template>

<script>
export default {
  setup() {
    const onSubmit = (values) => {
      console.log(values)
    }
    return { onSubmit }
  }
}
</script>

In the code above, we have a simple form with two input fields (name and email). We have added validation rules using the :rules prop. The required rule ensures that the user cannot submit the form without filling in the corresponding field. The min rule ensures that the user enters at least three characters in the name field. The email rule ensures that the user provides a valid email address in the email field.

Finally, we add an event listener for the form's submit event, which logs the form values to the console.

Conclusion

'vee validate vue 3' is a powerful and flexible form validation library that simplifies the process of validating forms in Vue.js 3 applications. It provides easy-to-use components for input fields, error messages, and forms that handle most of the validation logic for you. By using this library, you can save a lot of time and effort in writing custom validation logic for every form in your application.