1Object.entries(obj).forEach(
2    ([key, value]) => console.log(key, value)
3);

1let object = {
2  x: 10,
3  y: 10,
4  z: 10
5};
6let keys = Object.keys(object);
7// now 3 different ways:
8  // method 1:
9  key.forEach(function(key){
10      let attribute = object[key];
11      // do stuff
12    }
13  );
14
15  //method 2:
16  for(let key of keys){
17    let attribute = object[key];
18    // do stuff
19  }
20
21  //method 3:
22  for(let i = 0; i < keys.length; i++){
23    let key = keys[i];
24    let attribute = object[key];
25    // do stuff
26  }

1let a = {x: 200, y: 1}
2let attributes = Object.keys(a)
3console.log(attributes)
4//output: ["x", "y"]