Today, we'll create a polyfill for the Object.keys() method. The Object.keys() method returns an array of a given object's own enumerable property names. Our goal is to create a function called myKeys that will implement this behavior.
// Test case
const obj = { name: "Bob", age: 1000 };
console.log(Object.myKeys(obj)); // Output: ["name", "age"]
Plan
To solve this problem, we'll follow these steps:
- Implement the myKeys function to retrieve the enumerable property names of the object.
- Use a loop or a built-in method to iterate over the object's properties and collect the keys.
- Return an array containing the collected keys.
- Check if the Object.myKeys property exists.
- If it doesn't exist, create a new property called myKeys on Object and assign it a function.
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