优化子组件在父组件中的方法回调

父组件中的子组件 传参和方法优化

<div>
   <SysDatasync :statisticsData="siteData" @refresh="handleRefresh('site')" />
   <SysDatasync :statisticsData="equiData" @refresh="handleRefresh('equi')" />
   <SysDatasync :statisticsData="warnData"  @refresh="handleRefresh('warn')" />
   <SysDatasync :statisticsData="userData"  @refresh="handleRefresh('user')" />
   <SysDatasync :statisticsData="orderData" refresh="handleRefresh('order')" />
</div>

方法：

import SysDatasync from '@/view/components/sys_datasync/index.vue'

export default {
  components: {
    SysDatasync
  },
  data() {
    return {
      siteData: {
        title: '草莓',
        action: '',
        totaldata: '',
        newdata: '',
        time: ''
      },
      equiData: {
        title: '桃子',
        action: '',
        totaldata: '',
        newdata: '',
        time: ''
      },
      warnData: {
        title: '葡萄',
        action: '',
        totaldata: '',
        newdata: '',
        time: ''
      },
      userData: {
        title: '芒果',
        action: '',
        totaldata: '',
        newdata: '',
        time: ''
      },
      orderData: {
        title: '西瓜',
        action: '',
        totaldata: '',
        newdata: '',
        time: ''
      }
    }
  },
  mounted() {
    this.fetchData(this.siteData, 2)
    this.fetchData(this.equiData, 3)
    this.fetchData(this.warnData, 5)
    this.fetchData(this.userData, 1)
    this.fetchData(this.orderData, 4)
  },
  methods: {
    //这里封装好后可省去重复的代码
    fetchData(dataObj, synctype) {
       //接口可能需要不同的参数synctype
       //拿到数据 data
          dataObj.totaldata = data.totaldata 
          dataObj.newdata =  data.newdata 
    },
    //同步后刷新页面
    handleRefresh(type) {
      switch (type) {
        case 'site':
          this.fetchData(this.siteData, 2)
          break
        case 'equi':
          this.fetchData(this.equiData, 3)
          break
        case 'warn':
          this.fetchData(this.warnData, 5)
          break
        case 'user':
          this.fetchData(this.userData, 1)
          break
        case 'order':
          this.fetchData(this.orderData, 4)
          break
      }
    }
  }
}