<script>
  let obj1, obj2, obj3, obj4;
  // Shallow Copy and Deep Copy
  obj1 = {
      x: 2,
      y: 3
  }

  // Shallow Copy: The values of obj1 changes
  obj2 = obj1;
  obj2.x = 5;
  console.log(obj1, obj2); // {x: 5, y: 3} {x: 5, y: 3}

  // Deep Copy: The values of obj1 remains unchanged
  // Method 1: Use Object.assign()
  obj3 = Object.assign({}, obj1);
  obj3.x = 56;
  console.log(obj1, obj3); // {x: 5, y: 3} {x: 56, y: 3}

  // Method 2: Use JSON.parse(JSON.stringify())
  obj4 = JSON.parse(JSON.stringify(obj1));
  obj4.x = 10;
  console.log(obj1, obj4); // {x: 5, y: 3} {x: 10, y: 3}
</script>