title: Angular2: ElementRef nativeElement vs querySelector performance
body: <p>There are times when I have to go for <code>DOM event listners</code> and since </p>
  
  <p>I'm more familiar with <code>querySelector</code> I can use it with more ease.</p>
  
  <p>But I wonder what does <code>ElementRef</code> has to offer and which one is better.</p>