使用vee-validate在Vue.js中当表单字段有效时添加元素

import { ValidationProvider, extend } from 'vee-validate';
import { required } from 'vee-validate/dist/rules';

extend('required', {
  ...required,
  message: 'This field is required'
});

export default {
  components: {
    ValidationProvider
  },
  data() {
    return {
      formData: {
        // 表单字段
      }
    };
  }
};

<template>
  <div>
    <ValidationProvider rules="required" v-slot="{ errors }">
      <input v-model="formData.fieldName" type="text" />
      <span>{{ errors[0] }}</span>
    </ValidationProvider>
  </div>
</template>

export default {
  methods: {
    submitForm() {
      this.$refs.form.validate().then(success => {
        if (success) {
          // 表单验证通过，执行相应的操作
        }
      });
    }
  }
};