Filter

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Filter

👨‍💼 The filter method creates a new array with only elements that pass a test.

const numbers = [1, 2, 3, 4, 5]
const evens = numbers.filter((n) => n % 2 === 0)
// [2, 4]

The callback returns true to keep the element or false to exclude it.

🐨 Open

index.ts

and use the provided products fixture:

Create electronics: products where category === 'Electronics' (names: Laptop, Headphones, Monitor)
Create affordable: products where price < 100 (names: Toaster, Blender)
Create available: products where inStock === true (length 4)
Create inStockElectronicsUnder500: the names of products that are in stock, in the Electronics category, and have price < 500 — expected ['Monitor']
Export electronics, affordable, available, and inStockElectronicsUnder500

💰 filter keeps items where your callback returns true.

05. Array Methods/02. Filter (💪 problem)