title: ionic 3: click button smooth to top (When the scroll is not complete)
body: <p><a href="http://ionicframework.com/docs/api/components/content/Content/" rel="nofollow noreferrer">http://ionicframework.com/docs/api/components/content/Content/</a></p>
  
  <p>In this link write about scrolltotop.  This syntax must completed the scroll to work. But I want to scrolling click the button to smooth to top (not use hashtag). Who knows about it? Can you help me?</p>