Interpolation

1) app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';

import { AppComponent } from './app.component';

@NgModule({
  imports: [BrowserModule],
  declarations: [AppComponent],
  bootstrap: [AppComponent]
})
export class AppModule {
}

2) app.component.ts

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

@Component({
  selector: 'app-root',
  template: `
    <h1>{{message}}</h1>
    <input type="text" value="{{message}}"/>
  `
})
export class AppComponent {
  message: string = 'Angular – Interpolation Example';
}