Array Flatten in JavaScript
[1, [2, [3, 4]]] You need one flat line. [1, 2, 3, 4] This is array flattening. Let me show you how. What Are Nested Arrays? Array ke andar array. const nested = [1, [2, 3], 4]; // ^
May 10, 20263 min read1
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Articles tagged with #chai-code
The Magic of this, call(), apply(), and bind()
Whoever holds the lamp becomes this Method pass kiya. this lost ho gaya. Undefined aa gaya. Let me explain why — with a genie who serves the lamp-holder. But this time, you are the one who finds the
May 9, 20265 min read6
Understanding Object-Oriented Programming in JavaScript
Blueprint banao, objects banao. Har error apni story rakhta hai. You write code. Same pattern. Different data. Ek error ka message alag. Doosre error ka stack alag. Bar bar likhna? Nah. OOP solves th
May 8, 20265 min read4
Callbacks in JavaScript: Why They Exist
Function ko bhejo, baad mein bulayenge You know functions. You call them, they run. But what if you want a function to run later? After something finishes? That's a callback. Let me explain. Functio
May 8, 20264 min read1
Error Handling in JavaScript: Try, Catch, Finally
Code fatega, tension mat lo — sambhalna aana chahiye JavaScript runs. But sometimes it crashes. Your code breaks. App stops. User sees blank screen. That's bad. But what if you could catch the error
May 8, 20265 min read11
Synchronous vs Asynchronous JavaScript
"Apply karo, reply ka mat ruko. Kaam karte raho." You apply for a job. Do you sit and wait for reply? No. You keep working. Keep applying. Keep learning. That's asynchronous. Let me explain. The Pro
May 8, 20265 min read13