Getting Started with Form Validation in a Vue 3 App with Vee-Validate 4

Getting Started with Form Validation in a Vue 3 App with Vee-Validate 4

We’ll look at how to use Vee-Validate 4 in our Vue 3 app for form validation. Getting Started with form Validation in a Vue 3 App with Vee-Validate 4. We use the v-form component as the form container. We just import the object and string methods form the yup module.

Form validation is an important part of any app.

In this article, we’ll look at how to use Vee-Validate 4 in our Vue 3 app for form validation.

Getting Started with Script Tag

We can get started with the script tag.

We use the v-form component as the form container.

The v-field component is our input field.

error-message component is our error message.

For example, we can write:

<!DOCTYPE html>
<html lang="en">
  <head>
    <title>App</title>
    <script src="https://unpkg.com/[email protected]"></script>
    <script src="https://unpkg.com/[email protected]"></script>
  </head>
  <body>
    <div id="app">
      <v-form @submit="onSubmit">
        <v-field
          name="name"
          as="input"
          type="text"
          placeholder="What's your name?"
          :rules="isRequired"
        ></v-field>
        <br />
        <error-message name="name"></error-message>
        <br />
        <button>Submit</button>
      </v-form>
    </div>
    <script>
      const app = Vue.createApp({
        components: {
          VForm: VeeValidate.Form,
          VField: VeeValidate.Field,
          ErrorMessage: VeeValidate.ErrorMessage
        },
        methods: {
          isRequired(value) {
            if (!value) {
              return "this field is required";
            }
            return true;
          },
          onSubmit(values) {
            alert(JSON.stringify(values, null, 2));
          }
        }
      });
      app.mount("#app");
    </script>
  </body>
</html>

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