Fetch API & Handling JSON Responses

Why is it necessary to use JSON.stringify() on the request body?

const data = { username: 'john' };
fetch('/api/users', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify(data)
});

To make the request smaller
To convert JavaScript objects to JSON string format
JSON.stringify() is necessary because: 1) Fetch API requires the body to be a string or specific data types like FormData, 2) Converts JavaScript objects into JSON string format, 3) Ensures proper data format for server processing, 4) Maintains data structure integrity during transmission, 5) Required by the HTTP protocol for JSON data, 6) Prevents data corruption and parsing errors on the server.
To validate the data
To encrypt the data

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