如何在Angular 5上处理浏览器刷新操作? [英] How to handle Browser Refresh action on Angular 5?

问题描述

当前，我正在尝试检测浏览器刷新事件(使用F5)，然后一次重新初始化页面状态.我只是检查了路由器事件，即如果第一个事件类型为NavigationStart且事件ID为1，我认为用户按下了浏览器的刷新F5"按钮.

Currently, I am trying to detect browser refresh event (with F5) and then re-initialize page state once. I simply checked the router events, i.e. if the first event type is NavigationStart and event id is 1, I think a user pressed browser Refresh F5 button.

示例代码如下所示.但是，这看起来很奇怪.有没有更好的方法来归档相同的目标?或任何建议?谢谢

Sample code shown in below. However, it looks strange. are there any better way to archive the same goal? or any suggestions? thanks

export class AppComponent implements OnInit{

   constructor(private  router: Router) {
     this.router.events.pairwise().subscribe((events: any[]) => {
       if (events[0] instanceof NavigationStart
             && events[0].id === 1 && events[1].id === 1) {

             // re-initialize page sate . . .
    }
  });

}

推荐答案

我尝试了以下代码来检查浏览器重新加载.

I tried below code to check browser reload.

构造函数(专用路由器:路由器){

constructor(private router: Router) {

   this.subscription = router.events.subscribe((event) => {
    if (event instanceof NavigationStart) {
      browserRefresh = !router.navigated;
    }
});

}

引用来自: https://stackblitz.com/edit/angular-r6-detect-浏览器刷新

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