Mastering JavaScript Promises: A Guide to Async Programming

🚀 New Blog: Async/Await in JavaScript Clean async code ≠ magic It’s just promises made readable 🔗 https://lnkd.in/d4yaQjBa Also check this JS revision repo 🔗 https://lnkd.in/dqR-5ytF I revised callbacks, promises & async/await here — cleared a lot of my confusion 🔥 #javascript #webdev #asyncawait Hitesh Choudhary Piyush Garg Akash Kadlag Suraj Kumar Jha

Using Ternaries instead of if/else statements in JavaScript help making your code short and concise. - It enables inline usage as an Expressions - For simple conditions it will improve Readability, and more Using Ternaries for simple condition will always be the best approach. #javascript #conditionalstatement #statement #js #ternaries

Assalam o Alaikum, JavaScript Lesson 27: Default Parameters, Optional Chaining & Nullish Coalescing. This lesson covers safer, cleaner JavaScript patterns: default function values, safe access to nested properties with optional chaining (?.), and better fallbacks with nullish coalescing (??) instead of ||. I also show how to combine them in real-world code with user/theme examples. Watch the lesson: https://lnkd.in/dG2KSTgs #JavaScript #OptionalChaining #NullishCoalescing #DefaultParameters #WebDevelopment #Frontend #DeveloperMaroof #DevTools

A few years back… I thought all functions are hoisted the same way 😅 But actually… only one type gets VIP access 😅 👉 Function declaration → fully hoisted ✅ 👉 Function expression → hoisted as undefined ❌ 👉 Arrow function → same as above ❌ So this works 👇 sayHello() But these crash 👇 sayHi() sayBye() Because JavaScript treats them like variables first… and functions later 🤯 🔥 Rule: Only function declarations are safe to call before definition What’s the most confusing hoisting example you’ve seen? 😅 👉 var vs let? 👉 functions vs arrow functions? 👉 something weird in real project? Drop it in comments — let’s confuse everyone together 😂 #javascript #webdev #frontend #codingtips #developer

⚡ JavaScript Concept: Promises vs. Async/Await Stop the callback confusion! Choose the right tool for your async code. 🚀 🟢 Promises → The Foundation Action: Handles async operations via .then() and .catch(). Best for: Simple API fetches and parallel tasks. 🔴 Async/Await → The Standard Action: Cleaner syntax that reads like synchronous code. Best for: Complex logic and sequential API calls. #javascript #frontenddevelopment #reactjs #webperformance #webdevelopment

Schema validation is a critical part of building secure and reliable APIs. Here’s a side-by-side comparison of Express Validator, Joi, and Zod with practical examples to help you understand the differences in syntax and structure. Which one do you prefer in your Node.js projects — Express Validator, Joi, or Zod? #NodeJS #BackendDevelopment #JavaScript #WebDevelopment #APIs

🔥 Tricky JavaScript Async/Await Interview Question 🔥 What will be the output of this code? 👇 async function test() { try { console.log("1"); await Promise.reject("Error"); console.log("2"); } catch (e) { console.log("3"); } finally { console.log("4"); } } test(); console.log("5"); 💬 Drop your answer before checking 👇 #JavaScript #FrontendDevelopment #AsyncAwait #Promises #WebDevelopment #InterviewPreparation #ReactJS #CodingInterview #EventLoop #JavaScriptTips #SoftwareEngineering

💡 JavaScript Tricky Question let a = 'hello'; a[0] = 'H'; console.log(a); 👉 Output: `hello` ✅ Explanation: Strings in JavaScript are **immutable** (cannot be changed). Even though it looks like we’re modifying `a[0]`, JavaScript ignores it. So the original string stays the same. 🔹 To change it, you must create a new string: a = 'H' + a.slice(1); #JavaScript #WebDevelopment #Frontend #Coding #JSConcepts

Many developers use useEffect. But very few truly understand it. The purpose of useEffect is simple: to handle side effects. Such as: • API calls • DOM updates • event listeners The key lies in the dependency array. Think of it as a trigger: • When dependencies change → effect runs • When they don’t → effect is skipped Common mistakes: • Empty dependency array misunderstood • Incorrect dependencies causing infinite loops useEffect isn’t magic. It’s just logic. #reactjs #frontenddevelopment #javascript #webdevelopment #codingtips

From basic tags to advanced frameworks, here is the breakdown: ✅ Days 1-20: The Foundations (HTML/CSS) ✅ Days 20-40: The Engine (JavaScript/React) ✅ Days 40-70: Real-world Application & Design ✅ Days 80-100: Optimization & Polish Which stage do you find the most challenging? For me, it was definitely mastering Advanced JS! #TechCommunity #CodeNewbie #FrontendDeveloper #Roadmap