[Javascript] Compose multiple functions for new behavior in JavaScript

In this lesson you'll create a utility function that allows you to quickly compose behavior of multiple functions to CRE Ate new behavior. By the end, you'll have successfully created a tremendously popular helper function that's used in JavaScript libraries Ranging from Redux to Ramda.

Const STARTVAL = 4= x = = x* = x = x *2 = x + x +ten = x =  + X/2 = Halfnum (Addten (Doubled (squared (startval)));

The code above is not good enough. We can use the ' compose ' function instead of nested functions call together.

Write ' Compose ' function:

Const COMPOSE = (... fns) = Initialval = Fns.reduceright (val, fn) = fn (val), Initialval)

Now we can optimizte the code:

Const result = Compose (
Halfnum,
Addten,
Doubled,
Squared
) (Startval);

[Javascript] Compose multiple functions for new behavior in JavaScript