Edit in JSFiddle

var myApp = angular.module( 'myApp', [] );

myApp.controller( 'MyCtrl', [ '$scope', function ( $scope ) {}]);

<div ng-controller="MyCtrl">
    <input type="text" placeholder="Focus me!" ng-focus="focused = true" ng-blur="focused = false" />
    <pre ng-show="focused">I'm focused!!!</pre>
</div>