Angular 7 component with ngModel data binding.

contact.component.html

<h1>{{ title }}</h1>
<input type="text" [(ngModel)]="title">

contact.component.ts

import { Component, OnInit } from '@angular/core';

@Component({
  selector: 'app-contact',
  templateUrl: './contact.component.html',
  styleUrls: ['./contact.component.scss']
})
export class ContactComponent implements OnInit {
  title = 'Contact section';

  constructor() { }
  ngOnInit() { }
}