html - Change class in angularjs through controller -

please me change class of input[type=button] dynamically using angularjs , controller.

app.controller('anodekeypadcntrl',function($scope){  	  	  	$scope.clicktwentyfour = function(event){  	  in function need highlight button (adding .active class it)	  	};  	                              });

<div class="keypadcontainer" ng-controller="anodekeypadcntrl child">    ------    <input type="button" value="24" id="twentyfour" class="twentyfour anodekeypadbutton"  	ng-click="clicktwentyfour($event)" />    -------------  </div>

you can use ngclass this. in markup like:

<input type="button" value="24" id="twentyfour" class="twentyfour anodekeypadbutton" ng-click="clicktwentyfour($event)" ng-class="mydynamicclass" /> 

this way can set mydynamicclass either single string containing css class or array of strings directly controller

// controller code $scope.mydynamicclass = 'some-css-class'; 

this appended html. if @ ngclass docs see can attach functions return class, or write classes directly in html conditions attached.