It’s really easy to add keyboard shortcuts in the template:

<textarea (keydown.ctrl.enter)="doSomething()"></textarea>

Bonus

<input (keydown.enter)="...">
<input (keydown.a)="...">
<input (keydown.esc)="...">
<input (keydown.shift.esc)="...">
<input (keydown.control)="...">
<input (keydown.alt)="...">
<input (keydown.meta)="...">
<input (keydown.9)="...">
<input (keydown.tab)="...">
<input (keydown.backspace)="...">
<input (keydown.arrowup)="...">
<input (keydown.shift.arrowdown)="...">
<input (keydown.shift.control.z)="...">
<input (keydown.f4)="...">

file:app.component.ts

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

@Component({
  selector: 'my-app',
  template: `
    <h2>Type something in the input and hit control+enter to 
        update the value below:</h2>

    <h1>{{value || 'no value'}}</h1>
    <input (keydown.control.enter)="value=$event.target.value; $event.target.value = ''">
  `
})
export class AppComponent {
    value: string;
}

翻译自:https://www.30secondsofcode.org/angular/s/adding-keyboard-shortcuts-to-elements

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