Factory in AngularJS

• A factory is a simple Javascript function which allows you to add some logic before creating the object. It returns the created object.
• This is a singleton object .

Syntex: module.factory( 'factoryName', function );

Example:

When to use

• It is recommended to use Factory in all the cases.
• It lets you execute any of your complex logic before returning the final object. So, use this whenever your service needs to be a little complex.