showing results for - "has been blocked by cors policy react fetch firebase realtime database"
Juan Diego
18 Oct 2017
1likely error that arise to  cors blocked when using firebase is
2when you initiate a put or get request with an incomplete firebase url
3e.g
4// wrong form
5 this.http.get('https://******.firebaseio.com/data')   //this will throw an exception
6
7// correct form                                                    
8  this.http.get('https://******.firebaseio.com/data.json')
9