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Discussion on: JavaScript concepts I want to understand (JS event loop)

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Lukáš Zahradník

Fetch - is a set of interfaces for managing fetching resources (sending requests).
Function fetch being part of this API, is a function that is used to start the fetching. Along with this function, there are few interfaces (for example Request interface) that are also part of this API.

JSON - format for storing data and is based on JavaScript. It's nothing really more than that.