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

The method used to convert a JSON string into a JavaScript object is JSON.parse(). This function takes a JSON-formatted string as an argument and parses it, returning the equivalent JavaScript object. This is essential when you need to work with data that is received in JSON format, such as data fetched from a web API.

For example, if you have a JSON string like {"name": "John", "age": 30}, using JSON.parse('{"name": "John", "age": 30}') will result in an object like { name: "John", age: 30 }. This process allows developers to easily manipulate and access the data within a JavaScript context.

Other options like JSON.stringify() serve a different purpose; it converts JavaScript objects into JSON strings. JSON.decode() is not a valid method in the JSON object in JavaScript, and JSON.convert() does not exist at all. Thus, JSON.parse() is the right choice for this operation.