Top Tweets for #DefenceChallenge
✅ Day 45 of #Defence with @rohit_negi9 & @adityatandon02
useRef from first principles Mutable values persist Store interval ID DOM access current property No re renders useRef vs useState Stopwatch Video player Form handling #ReactJS #JavaScript #WebDevelopment #DefenceChallenge
✅ Day 43 of #Defence with @rohit_negi9 & @adityatandon02
Virtual DOM - Reconciliation algorithm O(n) Fiber architecture Diffing key list rendering Two phase rendering State batching stateNode references React compiler #ReactJS #JavaScript #WebDevelopment #MERN #DefenceChallenge
✅ Day 42 of #Defence with @rohit_negi9 & @adityatandon02
useEffect from first principles Why fetch fails Dependency array Cleanup functions async/await Controlled inputs Event listeners Timers Memory leaks #ReactJS #JavaScript #WebDevelopment #MERN #DefenceChallenge
✅ Day 41 of #Defence with @rohit_negi9 & @adityatandon02
useState from first principles Why normal variables fail Rerenders explained State lives outside setState is async Updater functions Array & object Rules of Hook #ReactJS #JavaScript #WebDevelopment #MERN #DefenceChallenge
✅ Day 40 of #Defence with @rohit_negi9 & @adityatandon02
JSX→esbuild→Babel→Vite→Rollup→Browser
npm vs npx
Why bundlers exist
Fast Refresh magic
Why .jsx matters
Dev vs Production build
Now errors make sense
#ReactJS #Vite #JavaScript #WebDevelopment #MERN #DefenceChallenge
✅ Day 35 of #Defence with @rohit_negi9
Async → Promise
Await pauses functions,not JS
Top-level await blocks modules
Sequential awaits hurt performance
Promise.all() = real concurrency
Clean syntax ≠ fast code
#JavaScript #AsyncAwait #WebDevelopment #MERN #DefenceChallenge #CSS
✅ Day 34 of #Defence with @rohit_negi9 and @adityatandon02
Promises clicked today.
A Promise = placeholder for a future value
States are strict: pending → fulfilled / rejected
Async JS feels logical now.
#JavaScript #Promises #AsyncJS #WebDevelopment #MERN #DefenceChallenge
#Day24 of my #defencechallenge and #DAY6 of my #JavaScript challenge by
@rohit_negi9
Topic name :-JavaScript Arrays Explained In-Depth.
#html #CSS #WebDevelopment #javascript #codingtime
#Day22 of my #defencechallenge and #DAY4 of my #JavaScript challenge by
@rohit_negi9
Topic name :-Conditionals, Loops & Operators Explained.
#html #CSS #WebDevelopment #javascript
#Day20 of my #defencechallenge an #DAY2 of my #JavaScript challenge by @rohit_negi9
Topic name :- Memory Management
#javascript #HTML #CSS #WebDevelopment #codingjourney
#Day36 of #DefenceChallenge🚀
📚Today’s Learning in JS -
✅ Prototype
✅ Class
✅ Class Inheritance (extends & super)
#WebDevelopment #JavaScript #LearnInPublic
#Day35 of #DefenceChallenge🚀
📚Today’s Learning in JS -
✅JS async await best practices
✅Top-level await ES2022
✅Async await performance optimization
✅JS module blocking
✅Fetch API async patterns
✅JS asynchronous programming mistakes
#WebDevelopment #JS #LearnInPublic
#Day34 of #DefenceChallenge🚀
📚Today’s Learning in JS -
✅Promises & why they’re used
✅How async JS works
✅Creating & using Promises
✅Promise states
✅Chaining for cleaner code
✅Errors with catch/finally
✅all, race, allSettled, any
✅Real-world uses & best practices
#JS
✅ Day 31 of #Defence with @rohit_negi9
They said you can’t learn JS in a day
so we built 10 projects
From a Quote Generator to a Quiz App hands on DOM, events, arrays & UI logic
JS finally felt like superpowers
#JavaScript #WebDevelopment #Frontend #DefenceChallenge #CoderArmy
✅ Day 30 of #Defence with @rohit_negi9
JS Events
3 parts→target,type,handler
addEventListener→modern approach
Phases→capture,target,bubble
Delegation→1 listener,many elements
preventDefault→control behavior
#JavaScript #MERN #WebDevelopment #DefenceChallenge #CoderArmy
✅ Day 29 of #Defence with @rohit_negi9
DOM Manipulation Unlocked:-
.textContent→safe updates
.innerHTML→powerful but risky
.classList→modern CSS control
.createElement→build dynamically
.DocumentFragment→boost performance
#JavaScript #MERN #WebDevelopment #DefenceChallenge
#Day33 of #DefenceChallenge🚀
📚Today’s Learning: Callback Hell in JS:—
✅JS is single-threaded->uses callbacks for async tasks
✅Exists when callbacks depend on each other→deep nesting
✅major problems caused by callback hell
✅ Solved using Promises & Async/Await
#WebDev #JS
✅ Day 28 of #Defence with @rohit_negi9
DOM Deep Dive :-
window vs document
Select→querySelector, getElementById
Manipulate→textContent, innerHTML
Style→classList, .style
Create→append, remove, DocumentFragment
#JavaScript #MERN #WebDevelopment #DefenceChallenge #CoderArmy
#Day32 of #DefenceChallenge🚀
📚Today’s Learning in JS: —
✅JS Engine & Single Thread Concept
✅What Makes JS Synchronous
✅Understanding Web APIs
✅Callback Queue & Task Queue
✅Event Loop Explained
#WebDevelopment #CoderArmy #JavaScript #LearnInPublic
✅ Day 27 of #Defence with @rohit_negi9 & @adityatandon02
JS Evolution
map→transform data
filter→select data
reduce→summarize data
Set→remove duplicates
Map→store key value pairs
WeakMap→auto memory cleanup
#JavaScript #MERN #WebDevelopment #DefenceChallenge #CoderArmy
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