• Difference between JavaScript Object and JSON

  Feature	JavaScript Object	JSON (JavaScript Object Notation)
  Type	Native JS object	String format
  Use Case	In code logic	Data exchange (e.g., APIs)
  Keys	Quotes optional	Keys must be in double quotes
  Supports Functions	✅ Yes	❌ No
  Can Have Comments	✅ Yes	❌ No
  Conversion	No conversion needed	Use JSON.stringify() / JSON.parse()

• Difference between PATCH and PUT

  Feature	PUT	PATCH
  Update type	Full replacement	Partial update
  Idempotent?	✅ Yes	✅ Usually, but not always
  Body content	Entire object required	Only the fields to update
  Performance	May be heavier	Lighter and more efficient
  Use case	Replace full resource	Modify one or a few fields