Javascript Map Arrow Function Return Object

Arrow functions work in two ways, implicit return, of explicit return with explicit return you have as usual the curly brackets around the body of the function (.parameters) => { // do stuff return result; Let's see a basic comparison between classic anonymous functions and new arrow functions: Map, reduce, and filter are all array methods in javascript.

In a concise body, only an expression is specified, which becomes the implicit return value. } can be written as. The anonymous object clashes with the scope operators, so you need to encapsulate the object in a scope block, and pass the object by return from there:

Each one will iterate over an array and perform a transformation or computation.

Each time callbackfn executes, the returned value is added to newarray. In this article, you will learn why and how to use each one. } implicit return can be used when the function is of only one line: Function body arrow functions can have either a concise body or the usual block body.