Скачать или смотреть Day 63 Function in Javascript Part - 2 | Full Stack Journey 2025

🚀 Day 63 of Full Stack Developer Journey in Hindi 2025

Aaj ke video me hum cover karenge JavaScript ke:
✅ Hoisting
✅ Function Inside Function
✅ Lexical Scope
✅ Block Scope vs Function Scope

JavaScript ka execution model aur scope system samajhna interviews aur real-world coding dono ke liye bahut important hota hai.

📌 Hoisting
JavaScript me variables aur functions ko execution se pehle memory me allocate kar diya jata hai.
Is process ko hoisting kehte hain.
Iska matlab code top par “lift” ho jata hai, chahe likha neeche ho.
Sirf conceptically samajhna important hai ki JS pehle declarations ko set karta hai, phir code run karta hai.

📌 Function Inside Function
JavaScript me ek function ke andar dusra function define kiya ja sakta hai.
Inner function outer function ke variables ko access kar sakta hai.
Ye concept modular aur reusable code likhne me kaam aata hai.

📌 Lexical Scope
JavaScript me scope static hota hai — matlab variables ka scope code ki positioning se decide hota hai.
Inner block apne outer blocks ke variables ko access kar sakta hai.
Ye same lexical environment follow karta hai jahan code likha gaya hai.

📌 Block Scope vs Function Scope
Block scope { } ke andar banne wale variables sirf usi block tak limited hote hain.
Function scope me variable poore function ke andar accessible hota hai.
Modern JavaScript me let aur const block scoped hote hain, jabki var function scoped hota hai.

📚 120-Day Full Stack Roadmap:
Frontend: HTML, CSS, JavaScript, React.js
Backend: Node.js, Express.js, REST APIs
Database: MongoDB, MySQL
Tools: Git, GitHub, Postman, Netlify, Vercel, CI/CD

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Type: Day 63 Done ✅

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