判断浏览器是关闭还是刷新

废话不多说，直接上代码，亲测有效

  let time = new Date().getTime() - localStorage.getItem("time");
  if(time > 2500){
    // 关闭相关逻辑
    // localStorage.setItem(this.$store.state.username,false);
  }
  window.addEventListener("beforeunload",function(){
    localStorage.setItem("time",new Date().getTime());
  })```