Native Alternate(Vanilla JS) to jQuery's ScrollTo Plugins

VanillaJS_ScrollTo

const supportsNativeSmoothScroll = 'scrollBehavior' in document.documentElement.style;

function scrollToView(elem) {
  if(supportsNativeSmoothScroll){
    // https://caniuse.com/#feat=mdn-api_window_scrollto
    // As of publish date of this gist, 
    // this is only supported in 52% browsers,
    // So, the next section (`else{`) is a fallback
    window.scrollTo({
        behavior: 'smooth',
        left: 0,
        top: elem.getBoundingClientRect().top + window.pageYOffset
    });
  }else{
    // Supported by 97% of browsers
    // https://caniuse.com/#feat=scrollintoview
    elem.scrollIntoView({behavior: "smooth", block: "end", inline: "nearest"});
  }
}

// Usage 
// scrollToView(document.getElementById('abc'));