Summary  
This chapter explains how to convert JSON strings into objects using JSON.parse and how to serialize objects into JSON strings using JSON.stringify.

General domain of usage  
Data interchange (e.g., exchanging data with web APIs)


JSON is a format used to store and transfer data.

It looks similar to JavaScript objects, but it is always written as a string.

```javascript
const jsonString = '{"name": "John", "age": 25}';
```

To work with JSON in JavaScript, you need to convert it.

To convert JSON into a JavaScript object, use `JSON.parse`:



const jsonString = '{"name": "John", "age": 25}';
const data = JSON.parse(jsonString);

console.log(data.name);



To convert a JavaScript object into JSON, use `JSON.stringify`:



const user = { name: "John", age: 25 };
const json = JSON.stringify(user);

console.log(json);

Learn the core concepts of JavaScript needed for backend development, including variables, data structures, functions, and asynchronous code. Practice working with real data and understand how JavaScript behaves outside the browser. Build a strong foundation before moving on to Node.js and server-side development.

Working with JSON