NG2- Default Checkbox true and change Checkbox selection values:

NG2- Default Checkbox true and change Checkbox selection values:
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Ref:http://plnkr.co/edit/Hxy5Jz?p=preview

@Component({

 selector: 'my-app',

  providers: [],



 template: `
  <div>
 
 
      <input type="checkbox" [checked]="isAvailable" (change)="isAvailable = $event.target.checked">

     <pre>{{ isAvailable | json }}</pre>

    </div>
  `,

 directives: []
})


export class App {

 isAvailable = true;
 
constructor() {
   
  }

}