I am using angular 7

Angular CLI: 7.3.9 Node: 10.16.3 OS: linux x64 Angular: 7.2.15

I use this code to pass data when route to another component

this.router.navigate(['/product'],{state: {token: data.token}});

and try to get token using following code

ngOnInit() {
    console.log("#25"); 
    this.state = this.activatedRoute.paramMap
        .pipe(map(() => window.history.state));
    console.log("#28"); //method 1
    console.log(this.state.token);
    this.router.events.pipe(filter(e => e instanceof NavigationStart))
                .subscribe((e: NavigationStart) => {
        this.state = this.router.getCurrentNavigation().extras.state;
        console.log("#33"); //method 2
        console.log(this.state.token);
    });

}

the console show

25 product.component.ts:25:10

28 product.component.ts:28:10

undefined

both method cannot get data back, how can I do it right?

The activatedRoute.paramMap is an Observable. If you want to get its data use this.activatedRoute.snapshot.paramMap But for states this should work:

ngOnInit(){
   this.state = history.state;
   ...
}