login.component.ts

import { Component, OnInit } from '@angular/core';
import {AuthService} from '../../services/auth.service';
import {Router} from '@angular/router';
import {FlashMessagesService} from 'angular2-flash-messages';

@Component({
  selector: 'app-login',
  templateUrl: './login.component.html',
  styleUrls: ['./login.component.css']
})
export class LoginComponent implements OnInit {
  username: String;
  password: String;

  constructor(
  private flashMessage: FlashMessagesService,
  private authService: AuthService,
  private router: Router) { }

  ngOnInit() {
  }


  onLoginSubmit(){
    console.log(this.username);
    const user = {
      username: this.username,
      password: this.password
    }

    this.authService.authenticateUser(user).subscribe(data => {
      console.log(data);
    });
  }

}