var _beforeUnload_time = 0, _gap_time = 0;
      window.onunload = function (){
          _gap_time = new Date().getTime() - _beforeUnload_time;
          if(_gap_time <= 10) {//浏览器关闭
              window.mgr.signoutRedirect();//这个mgr是我暴露在window的退出登录方法
          }else{//浏览器刷新-chrome刷新
              console.log(document.domain);
              return confirm("确定要离开本系统么？");
          }
      };
      window.onbeforeunload = function (){
          _beforeUnload_time = new Date().getTime();
      };

  data() {
    return {
      gap_time: 0,
      beforeUnload_time: 0,
    };
  },
  methods: {
    // 关闭窗口之前执行
    beforeunloadHandler() {
      this.beforeUnload_time = new Date().getTime();
    },
    unloadHandler() {
      this.gap_time = new Date().getTime() - this.beforeUnload_time;
      //判断是窗口关闭还是刷新 毫秒数判断 网上大部分写的是5
      if (this.gap_time <= 10) {
        mgr.signoutRedirect(); // 退出登录接口 这里应当换为个人的登出方法
      } else {
        console.log(document.domain);
        return confirm("确定要离开本系统么？");
      }
    },
  },
  unmounted() {//vue可换为destroyed()生命周期，不过这个也可以用
    // 移除监听
    window.removeEventListener("beforeunload", () => this.beforeunloadHandler());
    window.removeEventListener("unload", () => this.unloadHandler());
  },
  mounted() {
    // 监听浏览器关闭
    window.addEventListener("beforeunload", () => this.beforeunloadHandler());
    window.addEventListener("unload", () => this.unloadHandler());
  },