Topic Overview and Actualization

Hello! Today, we're going to uncover how web apps fetch data using APIs and the Fetch API in React. APIs retrieve data from systems, much like asking a waiter for takeout, while the Fetch API, a promise-based mechanism, initiates network requests, similar to dialing for a delivery.

Understanding APIs

In essence, APIs act as messengers. They transport your request to a system and deliver the data you have ordered, much like how ordering a pizza over the phone works.

Introduction to Fetch API

The Fetch API requests data and then processes it when it arrives, similar to awaiting your pizza delivery.

This process requests data from an API and converts it into a usable format — JSON.

Fetch API in React

Now, let's see how React, which uses components to divide the UI, utilizes the Fetch API. In functional components, the useState hook manages the data, often displaying a "Loading…" message while the data is being fetched.

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