What does stringify() return?

JSON.stringify() returns a string representation of a JavaScript object or value in JSON format. For example, JSON.stringify({name: "John", age: 30}) returns the string '{"name":"John","age":30}'. The method converts JavaScript objects, arrays, numbers, strings, booleans, and null into their JSON equivalents. Objects become JSON objects, arrays become JSON arrays, and primitive values are converted to JSON strings. Functions, undefined values, and symbols are omitted from the output or converted to null in arrays. The returned string is valid JSON that can be transmitted to servers, stored in files, or passed between systems. JSON.stringify() accepts optional parameters for filtering properties and formatting output. Use our JSON Formatter at jsonconsole.com/json-formatter to visualize the output of JSON.stringify(), making it easier to verify the serialization is correct and properly formatted.