What is difference between JSON.parse() and JSON.stringify() Methods in JavaScript ? Last Updated : 28 Apr, 2025 Comments Improve Suggest changes Like Article Like Report JSON.parse() converts JSON strings to JavaScript objects, while JSON.stringify() converts JavaScript objects to JSON strings. JavaScript utilizes JSON for data interchange between servers and web pages. These methods enable easy data manipulation and transport in web development. JSON.parse() MethodJSON.parse() converts a JSON string to a JavaScript object. It accepts a JSON string as input. It must be in string format when sending data to a web server locally. It's useful for storing data in local storage as browsers store data in key-value pairs. SyntaxJSON.parse( string, function )Example: In this example, we define a constant myInfo containing JSON-like data. It's parsed into an object Obj. The code then logs the values of Name and Age from Obj. The resulting output would be GFG and 22, respectively. JavaScript const myInfo = `{ "Name": "GFG", "Age":22, "Department" : "Computer Science and Engineering", "Year": "3rd" }` const Obj = JSON.parse(myInfo); console.log(Obj.Name) console.log(Obj.Age) OutputGFG 22JSON.stringify() MethodJSON.stringify() converts JavaScript objects into JSON strings, accepting a single object argument. It contrasts JSON.parse(). With replacer parameters, logic on key-value pairs is feasible. Date formats aren't allowed in JSON; thus, they should be included as strings. SyntaxJSON.stringify(value, replacer, space);Example: This example we converts the JavaScript object myInfo into a JSON string using JSON.stringify(). It then logs the resulting JSON string, which represents the object's data. JavaScript const myInfo = { Name: "GFG", Age:22, Department : "Computer Science and Engineering", Year: "3rd" } const Obj = JSON.stringify(myInfo); console.log(Obj) Output{"Name":"GFG","Age":22,"Department":"Computer Science and Engineering","Year":"3rd"}Difference Between JSON.stringify() Method & JSON.parse() MethodJSON.parse()JSON.stringify()Converts JSON string to JavaScript object.Converts JavaScript object to JSON string.The string must be wrapped in double quotes. example: “String”. No need to wrap the string in double quotes. Accepts only one argument, the JSON string.Accepts only one argument, the JavaScript object.Useful for parsing data received from servers.Useful for converting JavaScript objects for transmission.Can handle JSON with nested objects and arrays.Preserves data types, including numbers, strings, arrays, and objects.Can't include functions or undefined values.Includes all enumerable properties, excluding functions and undefined values.Handles dates as strings; must be converted.Allows optional replacer function to customize output or filter properties. Comment More infoAdvertise with us Next Article What is difference between JSON.parse() and JSON.stringify() Methods in JavaScript ? S shubhamathawane Follow Improve Article Tags : JavaScript Web Technologies JSON JavaScript-Questions Similar Reads JavaScript Tutorial JavaScript is a programming language used to create dynamic content for websites. It is a lightweight, cross-platform, and single-threaded programming language. It's an interpreted language that executes code line by line, providing more flexibility.JavaScript on Client Side: On the client side, Jav 11 min read Web Development Web development is the process of creating, building, and maintaining websites and web applications. It involves everything from web design to programming and database management. Web development is generally divided into three core areas: Frontend Development, Backend Development, and Full Stack De 5 min read React Interview Questions and Answers React is an efficient, flexible, and open-source JavaScript library that allows developers to create simple, fast, and scalable web applications. Jordan Walke, a software engineer who was working for Facebook, created React. Developers with a JavaScript background can easily develop web applications 15+ min read JavaScript Interview Questions and Answers JavaScript (JS) is the most popular lightweight, scripting, and interpreted programming language. JavaScript is well-known as a scripting language for web pages, mobile apps, web servers, and many other platforms. Both front-end and back-end developers need to have a strong command of JavaScript, as 15+ min read React Tutorial React is a JavaScript Library known for front-end development (or user interface). It is popular due to its component-based architecture, Single Page Applications (SPAs), and Virtual DOM for building web applications that are fast, efficient, and scalable.Applications are built using reusable compon 8 min read Domain Name System (DNS) DNS is a hierarchical and distributed naming system that translates domain names into IP addresses. When you type a domain name like www.geeksforgeeks.org into your browser, DNS ensures that the request reaches the correct server by resolving the domain to its corresponding IP address.Without DNS, w 8 min read NodeJS Interview Questions and Answers NodeJS is one of the most popular runtime environments, known for its efficiency, scalability, and ability to handle asynchronous operations. It is built on Chromeâs V8 JavaScript engine for executing JavaScript code outside of a browser. It is extensively used by top companies such as LinkedIn, Net 15+ min read HTML Interview Questions and Answers HTML (HyperText Markup Language) is the foundational language for creating web pages and web applications. Whether you're a fresher or an experienced professional, preparing for an HTML interview requires a solid understanding of both basic and advanced concepts. Below is a curated list of 50+ HTML 14 min read What is an API (Application Programming Interface) In the tech world, APIs (Application Programming Interfaces) are crucial. If you're interested in becoming a web developer or want to understand how websites work, you'll need to familiarize yourself with APIs. Let's break down the concept of an API in simple terms.What is an API?An API is a set of 10 min read Introduction of Firewall in Computer Network A firewall is a network security device either hardware or software-based which monitors all incoming and outgoing traffic and based on a defined set of security rules it accepts, rejects, or drops that specific traffic. It acts like a security guard that helps keep your digital world safe from unwa 10 min read Like