How TO write arrow function in javascript

1. What does => mean in JavaScript?
2. How do you type an arrow to a function?
3. Which one is correct code for arrow function in JavaScript?

What does => mean in JavaScript?

It's a new feature that introduced in ES6 and is called arrow function. The left part denotes the input of a function and the right part the output of that function.

How do you type an arrow to a function?

You can set the return type of an arrow function in TypeScript right after its parameters, e.g. const greet = (name: string): string => . Once a function's return type is set, the type checker alerts us if the function returns a value of a different type. Copied!

Which one is correct code for arrow function in JavaScript?

Arrow Function Syntax

arg1, arg2, ... argN are the function arguments. statement(s) is the function body.