# JavaScript Arrow Functions

The arrow function is a compact version of the standard function expression, which make them desirable when passing anonymous functions to methods.

# Syntax

The arrow function does not require the function keyword and, in most cases, can also forgo the curly braces and the return statement.

// standard function expression
const greeting = function (name) {
  return `Hello, ${name}`
}

// arrow function expression
const greet = name => `Hello, ${name}`

console.log(greeting('Joe')) // "Hello, Joe"
console.log(greet('Jack'))   // "Hello, Jack"

Because of the shorter syntax, arrow functions are preferred when working with passing functions to arrays methods.

function add (...numbers) {
  return numbers.reduce((total, number) => total += number)
}

console.log(add(4, 8, 3, 5, 2)) // 22