Get Angular Material v2 slider's value while sliding

Great question. Such a functionality has been added to Angular Material. See this commit.

In your case, you would not listen to the (change) event but rather to the (input) event. Here is an example:

<mat-slider (input)="onInputChange($event)"></mat-slider>

onInputChange(event: MatSliderChange) {
  console.log("This is emitted as the thumb slides");
  console.log(event.value);
}

I was trying to get mat-slider value inside of my component, and I got it by using event.value as shown below. Submitted this answer to help someone like me :) Thanks

<md-slider (input)="onInputChange($event)"></md-slider>

onInputChange(event: any) {
  console.log(event.value);
}