methods:{
            showDiv(){
                this.release = true;
            }
        }

  <unio2o-release-message-alert ref="unio2oReleaseMessageAlert" ></unio2o-release-message-alert>


<script>
    import unio2oReleaseMessageAlert from ‘@/components/module/coupon/releaseMessageAlert.vue‘;


export default {
        components:{
            unio2oReleaseMessageAlert
            
        }
<script>

btnClick(){
  //点击悬浮
  this.$refs.unio2oReleaseMessageAlert.showDiv();
},