vue 监听网页关闭/浏览器关闭事件

窗口关闭/浏览器关闭之后处理内容，例如删除cookie、session、local storage 等

methods: {
    beforeunloadHandler(e) {
      console.log('关闭窗口之后')
    }
}
// 绑定窗口关闭[监听]事件
mounted() {
    window.addEventListener('beforeunload', e => this.beforeunloadHandler(e))
}
// 解除窗口关闭[监听]事件
destroyed() {
    window.removeEventListener('beforeunload', e => this.beforeunloadHandler(e))
}

mounted() {
      window.addEventListener('beforeunload', e => this.beforeunloadHandler(e))
      window.addEventListener('unload', e => this.unloadHandler(e))
    },
    destroyed() {
      window.removeEventListener('beforeunload', e => this.beforeunloadHandler(e))
      window.removeEventListener('unload', e => this.unloadHandler(e))
    },
    methods: {
      beforeunloadHandler(){
        this._beforeUnload_time=new Date().getTime();
      },
      unloadHandler(e){
        this._gap_time=new Date().getTime()-this._beforeUnload_time;
        debugger
        //判断是窗口关闭还是刷新
        if(this._gap_time<=5){
          //如果是登录状态，关闭窗口前，移除用户
          if(!this.showLoginButton){
            $.ajax({
              url: '/pictureweb/user/remove',
              type: 'get',
              async:false, //或false,是否异步
             
            })
          }
        }
      },
}

window.beforeunload事件在window.unload事件之前执行。同时注意ajax请求方式必须为同步请求，所以不能使用axios,因为axios不能执行同步请求。参考