import { Component } from '@angular/core'; import { FormBuilder, FormGroup } from '@angular/forms'; @Component({ templateUrl: 'buttons.component.html' }) export class ButtonsComponent { public checkboxGroupForm: FormGroup; public radioGroupForm: FormGroup; constructor(private formBuilder: FormBuilder) {} model = { left: true, middle: false, right: false }; model1 = 1; // tslint:disable-next-line:use-life-cycle-interface ngOnInit() { this.checkboxGroupForm = this.formBuilder.group({ left: true, middle: false, right: false }); this.radioGroupForm = this.formBuilder.group({ model: 1 }); } }