Array.isArray() Polyfill | Javascript Interview Question | Day 21 - 75 Days Coding Challenge
In this video, we implement a polyfill for Array.isArray() from scratch and understand how JavaScript internally checks whether a value is an array. 🚀
This is part of my 75 Days JavaScript Machine Coding Challenge where we cover important coding concepts, interview questions, and hands-on implementations every day.
✅ What you’ll learn in this video:
How Array.isArray() works in JavaScript
Writing a polyfill using Object.prototype.toString
Edge cases and testing with different values
Stay tuned for more daily challenges to sharpen your problem-solving and coding skills! 💡
#JavaScript #Polyfill #CodingChallenge #MachineCoding #JavaScriptInterview