获取mat-checkbox - Angular材质的校验值

import { Component } from '@angular/core';
import { FormBuilder, FormGroup, Validators } from '@angular/forms';

@Component({
  selector: 'app-checkbox-form',
  templateUrl: './checkbox-form.component.html',
  styleUrls: ['./checkbox-form.component.css']
})
export class CheckboxFormComponent {
  form: FormGroup;

  constructor(private fb: FormBuilder) {
    this.form = this.fb.group({
      checkbox: ['', Validators.requiredTrue]
    });
  }

  onSubmit() {
    if (this.form.valid) {
      console.log('Checkbox is checked:', this.form.get('checkbox').value);
    } else {
      console.log('Checkbox is not checked');
    }
  }
}

<form [formGroup]="form" (ngSubmit)="onSubmit()">
  <mat-checkbox formControlName="checkbox">Check me</mat-checkbox>
  <button mat-raised-button color="primary" type="submit">Submit</button>
</form>