angular.service vs angular.factory

manpreet Best Answer 2 years ago

I have seen both angular.factory() and angular.service() used to declare services; however, I cannot find angular.service anywhere in official documentation.

What is the difference between the two methods? Which should be used for what (assuming they do different things)?

manpreet 2 years ago

Simply put ..

// Service
b.com/tag/service">service = (a, b) => {
  a.lastName = b;
  b.com/tag/return">return a;
};

// Factory
b.com/tag/factory">factory = (a, b) => Object.assign({}, a, { lastName: b });

const fullName = { firstName: 'john' };

// Service
const lastNameService = (a, b) => {
  a.lastName = b;
  b.com/tag/return">return a;
};
console.log(lastNameService(fullName, 'doe'));

// Factory
const lastNameFactory = (a, b) => 
  Object.assign({}, a, { lastName: b })
console.log(lastNameFactory(fullName, 'doe'));