AngularJS ngFocusOut directive - If you are new in angularJs you can use this by adding in your HTML tag. e.g. <input type = "text" ng-focus-out = "$scope.bool = true">

ngFocusOut.js

appStrapDirectives.directive('ngFocusOut', function( $timeout ) {
    return function( $scope, elem, attrs ) {
        $scope.$watch(attrs.ngFocusOut, function( newval ) {
            if ( newval ) {
                $timeout(function() {
                    elem[0].focusout();
                }, 0, false);
            }
        });
    };
});

I too needed something like this... wrote my own directive, worked like a charm. Then I discovered that this is essentially the ng-blur directive. https://docs.angularjs.org/api/ng/directive/ngBlur

Except when you need to do something before the element loses focus and not after the fact. Very useful if you are trying to save out selection from text area/input before losing focus for drag and drop.

you could use the built-in ng-blur instead:

ng-focus="focused=true" ng-blur="focused=false"