var self = this;
self.listData = [];

var self = this;
self.listData = [];

$http.get('/myList')
.success(function (data) {
    self.listData = data;
    console.log(data);
})
.error(function (data) {
    console.log('Error: ' + data);
});

self.myFunc = function(){
    var map = self.listData.reduce(function (p, c) {
        p.set(c.name.toLowerCase(), c.surname);
        return p;
    }, new Map());

    console.log(...map);
}

$http.get('/myList')
           .success(function (data) {
                self.listData = data;
                myFunc(listData);
                console.log(data);
           })
           .error(function (data) {
                console.log('Error: ' + data);
           });

 }

 function myFunc(){

    var map = self.listData.reduce(function (p, c) {
                p.set(c.name.toLowerCase(), c.surname);
                return p;
           }, new Map());

           console.log(...map);

 }

jQuery("#a-div-to-click").on("click", function() {
    var self = this;
    self.listData = [];
    $http.get('/myList').success(function (data) {
            self.listData = data;
            console.log(data);
            self.myFunc();
       }).error(function (data) {
            console.log('Error: ' + data);
       });
    }
    self.myFunc = function(){
        var map = self.listData.reduce(function (p, c) {
                p.set(c.name.toLowerCase(), c.surname);
                return p;
        }, new Map());

        console.log(map);
    }

});

app.controller('yourController', function ($scope, $http) {

    $scope.fetchData = funcion(onSuccess) {
        $http.get('/myList').success(function (data) {
                $scope.aDivlistData = data;
                console.log(data);
                if (onSuccess != null) {
                    onSuccess();
                }
           }).error(function (data) {
                console.log('Error: ' + data);
           });
        }
    }();

    $scope.onADivClicked = function() {
        if ($scope.aDivlistData == null) {
            $scope.fetchData($scope.populateMap);
        } else {
            $scope.populateMap();
        }

    };

    $scope.populateMap = function() {
        var map = $scope.aDivlistData.reduce(function (p, c) {
                p.set(c.name.toLowerCase(), c.surname);
                return p;
        }, new Map());

        console.log(map);
    }
}
//html part:
//<div id="a-div-to-click" ng-click="onADivClicked()">A Div</a>