Arrow Functions

Write a concise function and use it as a callback.

arrow_function.js

const factor = ;
const nums = [1, 2, 3];
const scaled = nums.map((n) => n * factor);
const text = scaled.join(",");

console.log("count=" + scaled.length);
console.log("text=" + text);

const factor = ;
const nums = [1, 2, 3];
const scaled = nums.map((n) => n * factor);
const text = scaled.join(",");

console.log("count=" + scaled.length);
console.log("text=" + text);

const factor = ;
const nums = [1, 2, 3];
const scaled = nums.map((n) => n * factor);
const text = scaled.join(",");

console.log("count=" + scaled.length);
console.log("text=" + text);

arrow-function An arrow function is a short function form. It works well inline as a callback, here transforming each array element with `map`.