JS Practice — Built-in Objects

Proxy get trap — typeof key

📖 Usage Example

const p = new Proxy({}, {
  get: (target, key) => 'got ' + String(key)
})
console.log(p.foo) // → 'got foo'
console.log(p.bar) // → 'got bar'

The get trap intercepts property reads on a proxy, letting you return custom values for any key instead of actual target values.

get trap — typeof the key

Property keys are strings (or Symbols). A get trap returning typeof k will return 'string' for any string key.

Challenge: Verify that p.foo === 'string' when get returns typeof k.

💡 Hints (1)