Which method is used to convert a JSON string into an object?

The method used to convert a JSON string into an object is JSON.parse(). This function takes a string that is formatted as JSON and parses it into a JavaScript object. This is essential because JSON, while similar to JavaScript object notation, is a text format and needs to be parsed into an actual object to work with it in JavaScript.

When JSON.parse() is called, it interprets the given string and constructs a corresponding JavaScript object that can then be utilized in your code, allowing access to its properties and methods just like a regular object. This conversion is crucial for applications that send and receive data as JSON strings, such as AJAX requests or data storage.

The other methods listed do not perform the task of converting a JSON string into an object. JSON.stringify() is used to convert a JavaScript object into a JSON string, which is the opposite of what is being asked. JSON.objectify() is not a valid method in the JSON API, and JSON.decode() is not a standard function in JavaScript for handling JSON data. Understanding these distinctions helps clarify the specific role of JSON.parse() in working with JSON data effectively.