0 of 6 problems solved • 0%
Arrow Functions
Arrow functions are a compact way to write function values. A single expression can be returned implicitly; a block body needs an explicit return when it should produce a result.
const double = (number) => number * 2;
const describeScore = (score) => {
const doubled = double(score);
return `Double score: ${doubled}`;
};
console.log(describeScore(6)); // Double score: 12Familiar function declarations become arrow functions as you practise both body styles. This syntax appears frequently in callbacks, which makes fluency here useful for the array modules ahead.