Execute an expresson when the text of the input field is being copied:
Definition and Usage
ng-copy directive tells AngularJS what to do when an HTML element
is being copied.
ng-copy directive from AngularJS will not override the element's original oncopy event,
ng-copy expression and the original oncopy event will be executed.
Supported by all HTML elements.
|expression||An expression to execute when the text of an element is being copied.|