Ionic 2 : EXCEPTION: Unexpected token < in JSON at position 0 - ionic2

Question

I want to send data to my database and when i click on submit button, i get this exeption : EXCEPTION: Unexpected token < in JSON at position 0
I really dont know what to do :/ you can check my code on my github: https://github.com/majlo23/makeorder-ionic
and here is my PHP code: https://github.com/dmikulasova/make-order_server

Answer 1

I had the same error but when i changed the serve response format to JSON, it worked for me.
More details
Node example:
app.get('/', function(req, res, next) {
return res.status(200).json({
message: "success"
});
});
Ionic 2
I generated a service.ts file to define my HTTP request method to be shared with all components.
I defined function load that return an Observable
import {Injectable} from '#angular/core';
import 'rxjs/add/operator/map';
import {Http,Response} from '#angular/http';
import {BackendURL} from '../utils/backendURL';
#Injectable()
export class HomeService {
constructor(private http: Http) {
}
load() {
return this.http.get(BackendURL.host).map((res:Response) => res.json()).catch(BackendURL.handleError);
}
}
In my component, i inject the service and i subscribe to the observable.Now you should see the response logged in the console.
import { Component } from '#angular/core';
import { NavController } from 'ionic-angular';
import {HomeService} from '../../services/home.service';
#Component({
selector: 'page-home',
templateUrl: 'home.html'
})
export class HomePage {
constructor(public navCtrl: NavController,public hs:HomeService) {
console.log('constructor HomePage');
this.hs.load().subscribe((data:any) => console.log('constructor HomePage data',data));
}
}