Evento de teclado na guia pesquisar

import { Component, OnInit, Input, OnChanges, ChangeDetectionStrategy, ElementRef, ViewChild } from '@angular/core';
import { stringify } from 'querystring';

@Component({
  selector: 'ig-pesquisa',
  templateUrl: './pesquisa.component.html',
  styleUrls: ['./pesquisa.component.css'],
  changeDetection: ChangeDetectionStrategy.OnPush
})

export class PesquisaComponent implements OnInit, OnChanges
{
  @ViewChild('dataContainer') dataContainer: ElementRef;
 
  ngOnChanges(changes: import("@angular/core").SimpleChanges): void {
    const txtidpesquisa = (<HTMLSelectElement>document.getElementById('pesquisa')).value;
    //console.log('idpesquisa: ' + idpesquisa);

    //debugger ;
    //console.log(changes);
    //alert('txtidpesquisa: ' + txtidpesquisa);
    console.log('RDN - 0: ngOnChanges -> pesquisa.component.ts');
    this.html = this.actualText;

    console.log('RDN: - 0.1: ngOnChanges -> ' + this.html)

    this.dataContainer.nativeElement.innerHTML = this.html;

    const divConteudo = document.getElementById('divConteudo');
    divConteudo.innerHTML = this.actualText;

    console.log('RDN - 1: ngOnChanges -> pesquisa.component.ts');
  }

  constructor(){

    console.log('RDN - 3: ngOnChanges -> pesquisa.component.ts');
  }

  @Input() html:string;
  @Input() actualText ='';
  @Input() conteudo: string;
  @Input() searchText: string;

  ngOnInit() {
    console.log('RDN - 2: ngOnInit -> pesquisa.component.ts' + this.actualText);
    //alert('Botão clicado!');
  }

  teste() {
    alert('teste');
 }

 /*
ngAfterContentInit(){alert('ngAfterContentInit');}
ngAfterContentChecked(){alert('ngAfterContentChecked');}
ngAfterViewInit(){alert('ngAfterViewInit');}
ngAfterViewChecked(){alert('ngAfterViewChecked');}
ngonDestroy(){alert('ngonDestroy');}
*/
}