TripleTen

When to Use
In situations where the this keyword isn't being used inside the body of a function, do what you think is best! For instance, it's quite convenient to use arrow functions in callbacks because of their short syntax:
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JAVASCRIPT
const numbers = [2, 3, 5];
const doubledNumbers = numbers.map(number => number * 2);

console.log(doubledNumbers); // 4, 6, 10