vue 使用element-ui中的Notification自定义按钮并实现关闭功能及怎样处理多个通知

import mainTable from './mixin/mainTable';
import systemMenu from './template/system-menu';
import headerRow from './template/header';
export default {
  name: 'xxxxx',
  data() {
    return {
      //使用messageId作为弹窗的key，用来获取弹窗的实例，以对对应弹窗进行操作
      notifications: {}
    };
  },
  mounted() {
    this.$messageWebsocket.websocketApi.initWebSocket(this.$store.state.login.userInfo.userInfo.id, this.openMessageTips);
  },
  methods: {
    //关闭单个通知
    closeNotification(id, operateCode, message){
      this.notifications[message.messageId].close();
      delete this.notifications[message.messageId];
    },
    //关闭所有通知
    closeAllNotification(){
      let _this = this;
      for (let key in _this.notifications) {
        _this.notifications[key].close();
        delete _this.notifications[key];
      }
    },
    //打开一个新的通知
    openMessageTips(message){
      let _this = this;
      this.closeAllNotification();
      let notify = this.$notify({
        title: '三高协诊消息',
        position: 'bottom-right',
        showClose: false,
        dangerouslyUseHTMLString: true,
        message: this.$createElement('div', null,
          [
            this.$createElement('div', null, [this.$createElement('span', null, message.content)]),
            this.$createElement('div', null,
              [
                this.$createElement(
                  'button',
                  {
                    style: {
                      padding: '10px 18px',
                      margin: '10px 12px 0px 2px',
                      textAlign: 'center',
                      textDecoration: 'none',
                      display: 'inline-block',
                      webkitTransitionDuration: '0.4s',
                      transitionDuration: '0.4s',
                      cursor: 'pointer',
                      backgroundColor: 'white',
                      color: 'black',
                      border: '2px solid #e7e7e7',
                    },
                    on: {
                      mouseout: function(e){
                        e.target.style.backgroundColor = 'white';
                      },
                      mouseover: function(e){
                        e.target.style.backgroundColor = '#e7e7e7'
                      },
                      click: _this.closeNotification.bind(_this, 1, 1, message)
                    }
                  },
                  "查看"
                ),
                this.$createElement(
                  'button',
                  {
                    style: {
                      padding: '10px 18px',
                      margin: '10px 2px 0px 12px',
                      textAlign: 'center',
                      textDecoration: 'none',
                      display: 'inline-block',
                      webkitTransitionDuration: '0.4s',
                      transitionDuration: '0.4s',
                      cursor: 'pointer',
                      backgroundColor: 'white',
                      color: 'black',
                      border: '2px solid #e7e7e7',
                    },
                    on: {
                      //鼠标移出的回调
                      mouseout: function(e){
                        e.target.style.backgroundColor = 'white';
                      },
                      //鼠标移入的回调
                      mouseover: function(e){
                        e.target.style.backgroundColor = '#e7e7e7'
                      },
                      click: _this.closeNotification.bind(_this, 1, 2, message)
                    }
                  },
                  "稍后提醒（五分钟后）"
                )
              ]
            )
          ]
        ),
        duration: 0,
      });
      //将messageId和通知实例放入字典中
      this.notifications[message.messageId] = notify;
    }
  }
};