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

app.controller('MainCtrl', function($scope) {
  $scope.name = 'World';
  $scope.changeName = (function(newName){
    $scope.name = newName;
    // Do you stuff here. 
  });
});

app.directive("remove", function() {
    return {
      link: function(scope, elm, attrs) {
        elm.bind('click', function(e) {
          console.log(attrs.remove);
          scope.$apply(function(){
            scope.$eval(attrs.remove);
          });
        });
      }
    };
  }
);
<!doctype html>
<html ng-app="plunker" >
<head>
  <meta charset="utf-8">
  <title>AngularJS Plunker</title>
  <script>document.write('<base href="' + document.location + '" />');</script>
  <link rel="stylesheet" href="style.css">
  <script src="http://code.angularjs.org/1.1.4/angular.js"></script>
  <script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
  <script src="app.js"></script>
</head>
<body ng-controller="MainCtrl">
  Hello {{name}}!
  <button remove="changeName('Human')">Click Me</button>
</body>
</html>
/* Put your css in here */