JS Asynchronous

Asynchronous programming allows JavaScript to execute tasks without blocking the main thread.

farid46Author

Table of Contents

Asynchronous Programming in JavaScript

Synchronous vs Asynchronous Execution

Example: Synchronous

Example: Asynchronous

Three Ways to Handle Asynchronous Operations in JavaScript

1. Callbacks (Traditional Approach)

Example

Problem: Callback Hell

2. Promises (Modern Approach)

Creating a Promise

Handling Promise Results

Example: Fetch Data Using Promise

3. Async / Await (Modern and Clean Syntax)

Example

Handling Errors with Async/Await

Using Fetch API (Real-World Example)

Example

Asynchronous Flow Overview

Comparison of Asynchronous Techniques

Best Practices

Javascript