JS Practice — Built-in Objects

Object.entries() — convert object to Map

📖 Usage Example

// Get [key, value] pairs of an object
const obj = { a: 1, b: 2 }
Object.entries(obj)   // → [['a', 1], ['b', 2]]

Use Object.entries() to get an array of [key, value] pairs for iterating over an object's own enumerable properties.

Object.entries() — interop with Map

Since Object.entries returns [key, value] pairs, you can pass the result directly to the Map constructor.

Challenge: Implement toMap(obj) that converts a plain object to a Map using Object.entries.

toMap({ a: 1, b: 2 }) // → Map { 'a' => 1, 'b' => 2 }

💡 Hints (1)

• `new Map(iterable)` accepts an iterable of `[key, value]` pairs — exactly what `Object.entries` returns.