[angularjs] How to call a function from another controller in angularjs?

I need to call function in another controller in angular js.How it is possible way please help me thanks in advance

Code :

app.controller('One', ['$scope',
    function($scope) {
        $scope.parentmethod = function() {
            // task
        }
    }
]);
app.controller('two', ['$scope',
    function($scope) {
        $scope.childmethod = function() {
            // Here i want to call parentmethod of One controller
        }
    }
]);

I wouldn't use function from one controller into another. A better approach would be to move the common function to a service and then inject the service in both controllers.

You may use events to provide your data. Code like that:

app.controller('One', ['$scope', function ($scope) {
         $scope.parentmethod=function(){
                 $scope.$emit('one', res);// res - your data
         }
    }]);
    app.controller('two', ['$scope', function ($scope) {
         $scope.$on('updateMiniBasket', function (event, data) {
                ...
         });             
    }]);

If the two controller is nested in One controller.
Then you can simply call:

$scope.parentmethod();  

Angular will search for parentmethod function starting with current scope and up until it will reach the rootScope.

If you would like to execute the parent controller's parentmethod function inside a child controller, call it:

$scope.$parent.parentmethod();

You can try it over here

The best approach for you to communicate between the two controllers is to use events.

See the scope documentation

In this check out $on, $broadcast and $emit.