Vue.js 唯一电子邮件地址的Vee验证

我将电子邮件存储在一个名为“emailsDB”的数组中，并尝试检查用户在电子邮件输入字段中输入的电子邮件是否存在于该数组中

这里提供了我所遵循的确切步骤-

然而，在实现时，我在控制台中得到一个错误，它说-

SyntaxError:导入声明只能出现在 模块

HTML代码

<div id="updateName" class="wrapper wrapper-right">
                <div class="wrapper-inner full-height">
                    <!--Contact Sec-->
                    <section>
                        <!--form sec-->
                        <section class="animated container-fluid align-center sec-ptop">
                            <h3 class="salutation">
                                Hey <span v-if='formData.Name.length'>{{formData.Name}}</span> <span v-else>There</span>, happy to hear from you.
                            </h3>
                            <div>
                                <form v-on:submit.prevent="validateBeforeSubmit" name="contactform" method="post" class="row form-horizontal" role="form" novalidate="true">
                                    <div class="form-group input--josh col-6">
                                        <div class="input-wrap">
                                            <input autocomplete="off" type="text" v-model="formData.Name" v-validate="'required'" id="Name" name="Name" placeholder="Name" class="form-control input__field input input__field--josh" :class="{'input': true, 'is-danger': errors.has('Name') }" />
                                            <i v-show="errors.has('Name')" class="fa fa-exclamation"></i>
                                            <label for="Name" class="input__label input__label input__label--josh input__label--josh-color-1 input__label--josh input__label--josh-color-1"></label>
                                        </div>
                                        <span v-show="errors.has('Name')" class="help is-danger">{{ errors.first('Name') }}</span>
                                    </div>
                                    <div class="form-group  input--josh col-6">
                                        <div class="input-wrap">
                                            <input autocomplete="off" type="email" v-model="formData.Email" v-validate="'required|email'" id="Email" name="Email" placeholder="Email" class="form-control input input__field input__field--josh" :class="{'input': true, 'is-danger': errors.has('Email') }">
                                            <i v-show="errors.has('Email')" class="fa fa-exclamation"></i>
                                            <label for="Email" class="input__label input__label--josh input__label--josh-color-1"></label>
                                        </div>
                                        <span v-show="errors.has('Email')" class="help is-danger">{{ errors.first('Email') }}</span>
                                    </div>
                                    <div class="form-group  input--josh col-12">
                                        <div class="input-wrap">
                                            <textarea rows="4" v-model="formData.Message" v-validate="'required'" id="Message" name="Message" placeholder="message" class="form-control input input__field input__field--josh" :class="{'input': true, 'is-danger': errors.has('Message') }"></textarea>
                                            <i v-show="errors.has('Message')" class="fa fa-exclamation"></i>
                                            <label for="Message" class="input__label input__label--josh input__label--josh-color-1"></label>
                                        </div>
                                        <span v-show="errors.has('Message')" class="help is-danger">{{ errors.first('Message') }}</span>
                                    </div>
                                    <div class="form-group col-12">
                                        <div class="align-center">
                                            <button type="submit" class="btn btn-default" data-ng-disabled="submitButtonDisabled">
                                                <span class="mask"></span>
                                                send
                                            </button>
                                        </div>
                                    </div>
                                </form>
                            </div>
                    </section>
                    <!--/Contact Sec-->
                </div>
            </div>

Vue.use(VeeValidate);
import { ValidationProvider } from 'vee-validate';
Vue.config.productionTip = false;
Vue.component('ValidationProvider', ValidationProvider);
const emailsDB = ["viveks.nair1988@gmail.com"];

var app = new Vue({
    el: '#updateName',
    mounted() {
        const isUnique = value =>
            new Promise(resolve => {
                setTimeout(() => {
                    if (emailsDB.indexOf(value) === -1) {
                        return resolve({
                            valid: true
                        });
                    }
                    return resolve({
                        valid: false,
                        data: {
                            message: `${value} has already reached out to me!`
                        }
                    });
                }, 200);
            });
        Validator.extend("unique", {
            validate: isUnique,
            getMessage: (field, params, data) => data.message
        });
    }
})

工作示例-

结果应该是什么的图像：

---

错误导入声明可能只出现在模块的顶层意味着在脚本中使用

import

时，之前可能不会出现其他指令

因此，您需要移动

Vue.use（VeeValidate）任何导入后的行：

这与vee validate本身无关

import { ValidationProvider } from 'vee-validate';
Vue.use(VeeValidate);
Vue.config.productionTip = false;
Vue.component('ValidationProvider', ValidationProvider);
const emailsDB = ["viveks.nair1988@gmail.com"];

...