angular js service and factory

1) i have seen people use many time use service to call web service to fetch data. rarely people use factory function to to call web service to fetch data......why?

why people prefer service than factory function ?

here i am posting a sample service which is calling web service.

app.service("TopMenuService", function ($http) {
this.getTopMenu = function () {
debugger;
return $http.get("/employee/getTopMenu");
};
});
app.service("LeftMenuService", function ($http) {
this.getLeftMenu = function () {
debugger;
return $http.get("/employee/getLeftMenu");
};
});
app.controller("EmpCtrl", function ($scope, TopMenuService,LeftMenuService) {
GetTopMenu();
GetLeftMenu();
function GetTopMenu() {
debugger;
var _getTopMenu = EmployeeService.getTopMenu();
_getTopMenu.then(function (topmenu) {
$scope.topmenu = topmenu.data;
}, function () {
alert('Data not found');
});
}
function GetLeftMenu() {
debugger;
var _getLeftMenu = EmployeeService.getLeftMenu();
_getLeftMenu.then(function (leftmenu) {
$scope.leftmenu = leftmenu.data;
}, function () {
alert('Data not found');
});
}
});

2) explain with example for the difference between angular service and factory function ?

thanks

2 Replies

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9y ago
Where you use new keyword in your service code what you said? Please clarify more on this topic.
Bharath Peggem9y ago
Hello,

Factories are functions that return the object

Services are construtor functions of the object which are instantiated with the new Keyword

Both allow us to create an object that can then be used anywhere in our app and both singletones.

Ex: factotry :

app.factory('myFact',function(){
return{
Getfunction : function(){}
}
});

Ex: Service :

app.service('myService',function(){
this.Getfunction=function(){};
};

Thanks,
Bharath Peggem