Скачать или смотреть What is JSON? Explained for beginners

JSON stands for JavaScript Object Notation. It’s a lightweight text format used to store and exchange data, one that both humans and machines can understand. It’s not a programming language, but a format.

Before JSON, XML was used for data transfer. It worked, but it was verbose and hard to read. JSON is shorter, simpler, and far easier for machines to parse that’s why it took over the web.

You’ll find JSON everywhere:
In configuration files
In databases, like MongoDB or Firebase
And in almost every web request and response

When your app requests data, the server sends JSON, your browser parses it instantly. That’s how modern applications talk to each other. Once you understand JSON, you understand how applications share data.

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