title: How to set blur for an element programmatically?
body: <p>I'm trying to set blur for a button programmatically with Angular 1.5, 
  I think that <code>ng-blur</code> cannot help me because it's like an event that I do something only when the element is not in focus (blur).
  I also tried <code>var elem = angular.element(document.querySelector("button"));
     elem.blur();</code> 
  but it doesn't work.</p>
  
  <p>Is there any easy way to set blur programmatically?</p>