Array Iteration Methods

Iteration methods let you work with every item in an array. This lesson pairs forEach() and map() so learners can compare a side-effect loop with a transformation method.

Example

javascript

const numbers = [1, 2, 3];
const labels = [];
numbers.forEach((n) => labels.push(`Number: ${n}`));
const doubled = numbers.map((n) => n * 2);

Your Task

Use forEach() on [1, 2, 3] to build labels with Number: 1, Number: 2, and Number: 3.
Use map() to create doubledNumbers and display Number: 1, Number: 2, Number: 3 | [2,4,6] in #output.

Hint 1

1 / 2

HINT 1

Use forEach() to push formatted labels into an existing array.

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READY

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javascript