Asynchronous Programming

Master asynchronous JavaScript: callbacks, promises, async/await, and API calls

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Course Overview

Asynchronous programming is essential for modern web development. Learn how to handle operations that take time, like fetching data from servers, without freezing your application. Master the evolution from callbacks to promises to the modern async/await syntax.

📚 4 Sections⏱️ 75 min💻 Hands-on exercises

1. Callbacks

Section 1

Imagine ordering pizza. You don't stand at the door waiting - you give them your phone number (a callback) and they call you when it arrives. That's exactly how callbacks work in JavaScript!

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2. Promises

Section 2

A Promise is like a receipt for something that will happen in the future. When you order online, you get a tracking number (promise) - the package will either arrive (fulfilled) or get lost (rejected).

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3. Async/Await

Section 3

Async/await is the modern way to work with asynchronous code. It makes async code look and feel like normal, synchronous code - much easier to read and write!

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4. Fetch API

Section 4

The Fetch API lets you talk to servers and APIs from your JavaScript code. It's like making a phone call to get or send information!

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What You'll Learn

Callback Functions

Understand the foundation of async programming

Promise Mastery

Handle async operations with clean, chainable code

Async/Await Syntax

Write async code that looks and feels synchronous

API Communication

Fetch data from servers and external APIs

Start with Callbacks