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Factory vector. A factory function is any function which is not a class or constructor that returns a presumably new object. Lets take a look at a simple example. Prior to es6 there was a lot of confusion about the differences between a factory function and a constructor function in javascript.
When it does so without the new. Use objectcreate to create an object using an existing object as a prototype. In javascript any function can return an object.
The type of object depends on the type of input string you specify. A factory function is a function that returns a new object. Factory functions do not require the use of the new keyword but can still be used to initialize an object like a constructor.
Function createjelly return type. Instead you will see the function constructors or the classes. Obj carfactoryracecar objdrive key fact.
When a function returns an object we call it a factory function. The idea is to have one function the factory that takes an input string and outputs an object. Often factory functions are used as api wrappers like in the cases of jquery and momentjs so users do not need to use new.
Since es6 has the class keyword a lot of people seem to. In object oriented programming oop a factory is an object for creating other objects formally a factory is a function or method that returns objects of a varying prototype or class from some method call which is assumed to be new. This technique could make your program more easily extensible also.
This is done by creating objects by calling a factory methodeither specified in an interface and implemented by child classes or implemented in a base class and. The following is the simplest form of factory function. More broadly a subroutine that returns a new object may be referred to as a factory as in factory method or factory function.
Taking arguments and using them to. Jelly colour. In class based programming the factory method pattern is a creational pattern that uses factory methods to deal with the problem of creating objects without having to specify the exact class of the object that will be created.
Check out this example.
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