What does JSON.stringify do?

What does JSON.stringify do?

• A. Converts a JSON string to a JavaScript value
• B. Serializes a Java value to JSON
• C. Parses an XML document
• D. Converts a JavaScript value to a JSON string

Answer: (D)

JSON.stringify is used to convert a JavaScript value into a JSON-formatted string. This is serialization—taking a JS value such as an object, array, number, string, boolean, or null and turning it into text that can be shared or stored. It does the opposite of JSON.parse, which reads that text and rebuilds the JavaScript value. It doesn’t parse XML, nor does it involve converting a Java value to JSON. Keep in mind that some values, like functions or undefined inside objects, aren’t included in the JSON output, and you can influence formatting or filtering with optional arguments.