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Async Await in Javascript | Javascript Full Course #20
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Web Development Full Course 2026 | Build Real Projects (Node.js, Express, React, MongoDB, SpringBoot, AI , System Design) - Async Await in Javascript | Javascript Full Course #20

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41 learners

What you'll learn

This course includes

  • 48 hours of video
  • Certificate of completion
  • Access on mobile and TV

Summary

Full Transcript

Are you using await outside of async functions? You might be blocking your ENTIRE application without knowing it! In this video, I explain why top-level await can be a performance disaster and show you the RIGHT way to handle asynchronous code in JavaScript. ⏱️ TIMESTAMPS: The Problem - Code That Looks Right But Isn't What is Top-Level Await? Live Demo - How It Blocks Everything Why This Destroys Performance 🔥 KEY TAKEAWAYS: ✅ Top-level await blocks your ENTIRE module ✅ Other code has to wait for your fetch to complete ✅ Your app becomes slower for no reason ✅ Use async functions instead for non-blocking code 📝 CODE EXAMPLES FROM VIDEO: GitHub Gist: [your-link-here] 🎯 COVERED IN THIS VIDEO: - JavaScript async await best practices - Top-level await ES2022 - Async await performance optimization - JavaScript module blocking - Fetch API async patterns - JavaScript asynchronous programming mistakes 💡 QUICK RULE: Top-level await = "Nobody does ANYTHING until this finishes" Async function = "I'll handle this in the background, keep working" 🏷️ TAGS: #javascript #asyncawait #webdevelopment #javascripttutorial #es2022 #programming #frontenddevelopment #nodejs #performanceoptimization #codingtips Visit Coder Army Website: https://coderarmy.in/#home Course start date: 1 september Timing: 6pm (Mon-fri) Hackathon will be organised after course completion Join Premium Whatsapp Group: https://whatsapp.com/channel/0029Va6H0tbHVvTbcuT99Y1f Class Notes :https://www.notion.so/Lecture-20-Async-Await-in-Javascript-2a73a78e0e228063b899c85279911c35?source=copy_link Code Link: https://github.com/coderarmy-notes/mern-stack-course Twitter: https://x.com/rohit_negi9?s=21 Channel: ‪@CoderArmy9‬ Buy Our Premium Course of Web dev+Blockchain+HLD+DSA: https://rohittnegi.akamai.net.in/new-courses/4-web-development-block-chain (5500 only) Time Stamp: #javascript #webdevelopment #mernstack

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