JS Practice — Built-in Objects

Reflect.deleteProperty() — returns true

📖 Usage Example

const obj = { a: 1, b: 2 }
Reflect.deleteProperty(obj, 'a')
console.log(obj)              // → { b: 2 }
console.log('a' in obj)       // → false

Reflect.deleteProperty() deletes a property from an object, returning true on success, just like the delete operator.

Reflect.deleteProperty() return value

Reflect.deleteProperty() returns true when the deletion succeeds (or when the key doesn't exist).

Challenge: Verify that Reflect.deleteProperty({x: 1}, 'x') returns true.

💡 Hints (1)