ERROR TypeError: Cannot read property 'get' of undefined

Question

ERROR TypeError: Cannot read property 'get' of undefined

im new in angular i really need help and thanks in advance

 constructor(private http: Http, private authService: AuthService, private router: Router) { this.token = localStorage.getItem('token'); if(token){ this.interval = setInterval(this.ingameee, 5000); } } ingameee() { this.http.get('http://url.com/api/matchmaking/keepalive?token='+ this.token) .subscribe( response => { this.dataa = response; this.mod = this.dataa.json().mod; this.playersinqueue = this.dataa.json().playersinqueue; this.region_id = this.dataa.json().region_id; this.party_id = this.dataa.json().party_id; }, error => console.log(error), ); } 

Answer 1

请记住使用arrow function在使用回调时保持上下文，因为this （上下文）将会改变。

this.interval = setInterval(() => this.ingameee(), 5000);