app.component.ts

import {Component, Input, OnChanges, OnInit, SimpleChange} from '@angular/core';
 
@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class AppComponent implements OnInit, OnChanges {
  title = 'phoenix-wc-wiki-ngx-lt';
 
  @Input() token: string;
 
  constructor() {
    console.log('token constructor=' + this.token);
  }
 
  ngOnInit() {
    console.log('token ngOnInit=' + this.token);
  }
 
  ngOnChanges(changes: {[token: string]: SimpleChange}) {
    // check the object "changes" for new data
    console.log('token ngOnChanges=' + this.token);
  }
 
}