What is the main purpose of `JSON.stringify()` in JavaScript?

The main purpose of JSON.stringify() in JavaScript is to convert a JavaScript object or value into a JSON string representation. When you have a JavaScript object that you want to send over a network, store in a file, or display in a specific format, you need to represent that object as a string. JSON.stringify() takes the object and serializes it into a format that adheres to the JSON (JavaScript Object Notation) standard, which is widely used for data interchange.

This method is particularly useful because JSON strings can easily be sent to a server or transmitted between applications, as they are more lightweight compared to the original object format. The resulting string will include the keys and values from the original object, formatted as JSON, which can then be parsed back into an object using JSON.parse().

The option stating that it converts a JSON string into a JavaScript object actually describes the function of JSON.parse(), while sending JSON data to a server does not directly encapsulate the function of JSON.stringify(), as it is a step that may be taken after conversion. Thus, understanding what JSON.stringify() does clarifies its utility in transforming JavaScript objects into a storable and transmittable format