Object length in JavaScript

Objects don't have the property length to find their length. Let's make sure of this. Let's have the following object:

let obj = {a: 1, b: 2, c: 3};

Let's try to find out the number of its elements:

console.log(obj.length); // shows undefined

Let's solve the task in a roundabout way - we get an array of object keys and find its length:

console.log(Object.keys(obj).length); // shows 3

Find the number of elements in the following object:

let obj = {x: 1, y: 2, z: 3};