How to initializate a mat-slide-toggle of Material Design in Angular 5?

Question

I can\'t make the initialization of a mat-slide-toggle in a Reactive Form.

I have something like in the template

Answer 1

IMHO, there's some issue with your code. You should do something like this:

{{X.value ? 'ON' : 'OFF'}}              

And in controller you'll need to assign the formControl so, use = instead of : ie:

 X = new FormControl(true, [
      Validators.required
 ]);