title: What's alternative to angular.copy in Angular
body: <p>How can I copy an object and lose its reference in Angular?</p>
  
  <p>With AngularJS, I can use <code>angular.copy(object)</code>, but I'm getting some error using that in Angular.</p>
  
  <blockquote>
    <p>EXCEPTION: ReferenceError: <code>angular</code> is not defined</p>
  </blockquote>