JS Practice — Built-in Objects

Map entries() — each entry is [k,v]

📖 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()

Each entry is a two-element array [key, value].

Challenge: Verify that each entry has the correct structure.

💡 Hints (1)