What Is a Factory Function Javascript

A factory function is any function which is not a class or constructor that returns a (presumably new) object. In JavaScript, any function can return an object. When it does so without the new keyword, it’s a factory function. … In concise methods, this refers to the object which the method is called on.

What is a function factory?

A function factory is a function that makes functions. Here’s a very simple example: we use a function factory ( power1() ) to make two child functions ( square() and cube() ): power1 <- function(exp) { function(x) { x ^ exp } } square <- power1(2) cube <- power1(3)

Which of the following is a factory function?

Which of the following is a factory function? Explanation: jQuery() is a factory function rather than a constructor: it returns a newly created object but is not used with the new keyword. jQuery objects define many methods for operating on the sets of elements they represent.