🤔 React Sikhna Kya Hai?
React.js (ya React) Facebook (ab Meta) ne 2013 mein banayi JavaScript library hai — websites aur web apps ke interactive UI banane ke liye. Tab se React ne frontend development ka game change kar diya. Aaj Instagram, WhatsApp Web, Netflix, Zomato — sab React-based hain. India mein bhi Razorpay, CRED, Swiggy, Flipkart, Zerodha sab React stack use karte hain.
React ka concept simple hai — UI ko 'components' mein todo. Ek button = ek component, ek navbar = ek component, ek product card = ek component. Components reusable hote hain aur 'state' rakhte hain (yaani data jo change ho sakta hai). Jab data change hota hai, React efficiently sirf relevant parts ko update karta hai — full page reload nahi. Iss efficiency ki wajah se React apps Twitter ya Instagram ki tarah smooth lagti hain.
React seekhne ki prerequisite hai — JavaScript fundamentals (variables, functions, arrays, async/await, ES6 syntax). Agar JS solid hai toh React 2 mahine mein cover ho jaata hai (daily 1.5 ghante). Agar JS hi nahi aati toh pehle 2-3 mahine JS pe lagao. React seekhne ke baad Next.js (production-grade framework on top of React) seekhna mandatory hai — India ke top startups Next.js stack use karte hain.
Indian context mein React developers ki demand crazy hai — Naukri.com pe 25,000+ React job postings active hain har mahine. Freshers React-only ₹4-7 LPA, full-stack React + Node ₹6-12 LPA, senior React developers ₹15-30 LPA. Remote jobs ka best opportunity bhi React mein hai because Western companies React heavily use karti hain.
