JS Practice — Built-in Objects

Map entries() — destructuring

📖 Usage Example

const m = new Map([['a', 1], ['b', 2]])
for (const [key, val] of m.entries()) {
  console.log(key, val) // 'a' 1, then 'b' 2
}

Use Map.entries() to iterate over [key, value] pairs in insertion order.

Map.prototype.entries()

You can destructure each [key, value] pair with for-of.

Challenge: Verify that destructuring entries works correctly.

💡 Hints (1)