text: import BackTop from "components/common/backTop/BackTop";
  export const backTopMixin = {
    components:{
      BackTop
    },
    data(){
      return{
        isShowBackTop : false
      }
    },
    methods:{
      backClick(){
        this.$refs.scroll.scroll.scrollTo(0,0,1000)
      },
      listenShow(possition){
        this.isShowBackTop = possition.y < -1200
      }
    }
  }