vue父组件点击事件向子组件传递值

   <a-button @click="draft2()"style="margin-left: 15px;">草稿程序</a-button>

 draft2(){
     this.draftid=1
    
        this.$refs.modal.show(this.draftid)

    },

  <TaskModal
      @submit="handleRelatedTask(arguments)"
      ref="modal"
      :type="$route.query.deviceType"
   
    ></TaskModal>

  show(data) {
      this.visible = true
    console.log(data+"接收值");
      this.getDeviceTaskByParas(data)
    }