JSON

JSON (JavaScript Object Notation) is a lightweight, text-based data format that uses JavaScript object syntax for structuring data. It was popularized by Douglas Crockford and is widely used for transmitting data between a server and a client in web applications. JSON files typically have a .json extension and use the MIME type application/json.

Common Operations with JSON

Parsing: Transforming a JSON-formatted string into a native JavaScript object.

const obj = JSON.parse(jsonString);

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Example:

const jsonString = '{"name":"John","age":30}';
const obj = JSON.parse(jsonString);  // { name: "John", age: 30 }

Stringification: Converting a JavaScript object into a JSON-formatted string, commonly used for data transmission or storage.

const jsonString = JSON.stringify(object);

Example:

const obj = { name: "Jane", age: 25 };
const jsonString = JSON.stringify(obj);  // '{"name":"Jane","age":25}'