//内容部分

<Form ref="formCustom" :model="formCustom" :rules="ruleCustom" :label-width="80">
  <FormItem label="Age" prop="age">
    <Input type="text" v-model="formCustom.age" number></Input>
  </FormItem>
  <FormItem>
    <Button type="primary" @click="handleSubmit('formCustom')">Submit</Button>
    <Button @click="handleReset('formCustom')" style="margin-left: 8px">Reset</Button>
  </FormItem>
</Form>

export default {
  data () {
    return {
      formCustom: {
        age: ''
      },
      ruleCustom: {
        age: [
          { required: true, message: '年龄不为空', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    handleSubmit (name) {
      this.$refs[name].validate((valid) => {
        if (valid) {
          const form = this.formCustom
          // 在这将事件传递出去
          this.$emit('submit', form)
        } else {
          this.$Message.error('Fail!');
        }
      })
    },
    handleReset (name) {
      this.$refs[name].resetFields();
    }
  }
}

 //子组件
 <modalContent @submit="handleSubmit"/>

import modalContent from '子组件位置（这里没写）'
export default {
  components: { modalContent },
  data () {
    return {}
  },
  methods: {
    // 子组件的点击触发事件
    handleSubmit(form) {
      this.$Message.success('Success!');
    }
  }
}