registro de validación de datos elementui_form

<el-form :model="FormBase" ref="FormBase" label-width="100px" class="demo-dynamic">
  <el-form-item
    prop="email"
    label="邮箱"
    :rules="[
      { required: true, message: '请输入邮箱地址', trigger: 'blur' },
      { type: 'string', message: '请输入正确的邮箱地址', trigger: ['blur', 'change'] }
    ]"
  >
    <el-input v-model="FormBase.email"></el-input>
  </el-form-item>
 <el-form-item
    prop="iphone"
    label="手机号"
    :rules="[
      { required: true, message: '请输入手机号', trigger: 'blur' },
      { type: 'string', message: '请输入手机号', trigger: ['blur', 'change'] }
    ]"
  >
    <el-input v-model="FormBase.iphone"></el-input>
  </el-form-item>
  <el-form-item
    v-for="(domain, index) in FormBase.domains"
    :label="'联系人' + index"
    :key="index"
    :prop="'domains.' + index + '.value'"
    :rules="{
      required: true, message: '联系人不能为空', trigger: 'blur'
    }"
  >
    <el-input v-model="domain.value"></el-input><el-button @click.prevent="removeDomain(domain)">删除</el-button>
  </el-form-item>
  <el-form-item>
    <el-button type="primary" @click="submitForm('FormBase')">提交</el-button>
    <el-button @click="addDomain">新增</el-button>
    <el-button @click="resetForm('FormBase')">重置</el-button>
  </el-form-item>
</el-form>
<script>
  export default {
    data() {
      return {
        FormBase: {
          domains: [{
            value: ''
          }],
          email: ''
        }
      };
    },
    methods: {
      submitForm(formName) {
        this.$refs[formName].validate((valid) => {
          if (valid) {
            alert('submit!');
          } else {
            console.log('error submit!!');
            return false;
          }
        });
      },
      resetForm(formName) {
        this.$refs[formName].resetFields();
      },
      removeDomain(item) {
        var index = this.FormBase.domains.indexOf(item)
        if (index !== -1) {
          this.FormBase.domains.splice(index, 1)
        }
      },
      addDomain() {
        this.FormBase.domains.push({
          value: '',
          key: Date.now()
        });
      }
    }
  }
</script>