Angular 1.4.9: Empty Fiddle

http://angularjs.org/

HTML

<script src="https://code.angularjs.org/1.4.9/angular.js"></script>
<div ng-controller="MyCtrl">
   <a class="first-menu" ng-click="click(1)" href="#">First link</a>
   <a class="second-menu" ng-click="click(2)" href="#">Second link</a>
   <a class="third-menu" ng-click="click(3)" href="#">Third link</a>


    <div class="first-menu-div" ng-show="cClass == 1">
      This is first MENU
    </div>
    <div class="second-menu-div" ng-show="cClass == 2">
      This is Second MENU
    </div>
    <div class="third-menu-div" ng-show="cClass == 3">
      This is Third MENU
    </div>
</div>

CSS

div {
  //display: none;
  margin-top: 100px;
  background: orange;
  padding: 50px;
}

.second-menu-div {
  background: yellow;
}

.third-menu-div {
  background: #6600ff;
}

JavaScript

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

//myApp.directive('myDirective', function() {});
//myApp.factory('myService', function() {});

myApp.controller('MyCtrl', function($scope) {
   $scope.click = function(item){
   	$scope.cClass = item
  }
});