Service Creation in AngularJS

createService

var app = angular.module('capeloMod', []);
 
app.service('demoService', function() {
	
	this.publicValue = 0;
	var privateValue = 0;
	
	var privateFn = function() {
	    return 1 + 2;
	};
	
	this.apiFn = function(arg) {
        return this.publicValue++;
    };
    
    this.apiFn2 = function() {
        return privateFn () + privateValue++;
    }
});