<div ng-app='myApp' ng-controller='DirectiveTestController'>
    <button hello ng-click="testClick()">Test CLICK!</button>
</div>

var myApp = angular.module('myApp', []);
myApp.controller('DirectiveTestController', ['$scope',

function ($scope) {
    $scope.testClick = function () {
        window.alert("hey");
        console.log("hey");
    }
}]);
myApp.directive('hello', function () {
    return {
        scope: true,
        controller: ['$scope', '$element', '$compile', function ($scope, $element, $compile) {
            $element.removeAttr('hello');
            //          $element.removeAttr('ng-click');
            $compile($element)($scope);
        }]

    };
});

app.directive("otcDynamic", function($compile){
   return {
        link: function(scope, element){
            var template = "<button ng-click='doSomething()'>{{label}}</button>";
            var content = $compile(template)(scope);
            element.append(content);
        }
    };
});