Javascript Interview Question 🤯#javascript #react #tranding #interview #viralvideo #shorts #india

🎥 JavaScript Interview Tips - Day 3: Understanding NaN in JavaScript 🧑‍💻

In today’s reel, we dive into one of the most commonly asked JavaScript interview questions—what happens when you perform arithmetic operations with incompatible data types?

I’ve written a small snippet of JavaScript code that you might come across in an interview:

What’s the Output? 🤔

When you run this code, the output is NaN. But why? Let’s break it down:

🧐 Understanding NaN:
In JavaScript, when you try to perform an arithmetic operation between a number and a string that isn’t a valid number (like "s"), the operation fails. JavaScript attempts to convert the string "s" to a number, but since it’s not a valid numeric string, the result is NaN, which stands for "Not a Number."

But here’s the tricky part—NaN is actually of type number! So, even though it indicates an invalid or unrepresentable value, JavaScript still considers NaN as a number. This little quirk often comes up in interviews to test your understanding of how JavaScript handles different data types.

🧠 Pro Tip:
Always be mindful of the types you’re working with in JavaScript, especially when dealing with operations that expect numeric values. Understanding how and why NaN is produced can help you avoid unexpected bugs in your code and impress your interviewer with your deep knowledge of JavaScript’s quirks.

If you found this tip helpful, don’t forget to like, share, and follow for more daily insights and JavaScript interview tips! Let’s master JavaScript together, one step at a time! 💪

#javascript #interview #jsinterviewquestions #javascriptdevelopers #js #tranding #new #india #typescript #reactjs #react #viralvideos #viralreels #latest #instareels #indiareels #coding #developer #programming
#newpost #nextjs #html #css #frontend #fullstackdeveloper #frontenddeveloper #canvas ##canva #javascriptshorts #instalike
reactjs, react js, reactjs tutorial for beginners, reactjs projects, reactjs tutorial in hindi, react js projects for beginners, reactjs hooks, reactjs documentary,
reactjs animation, reactjs app, apna college react js, reactjs barcode scanner,
reactjs dashboard, reactjs dropdown menu, reactjs drag and drop, react js explained, reactjs education website

short video viral, short video viral tips and tricks, short video viral trick
youtube, short video viral trick, short video viral tips and tricks 2024
short video viral kaise kare 2024, education short video viral kaise karen
facts short video viral kaise karen, short video viral background music
short video viral 2024

#react #reactjs #reactjsdeveloper #reactjs #javascript #javascripttutorial #reactjsproject
#portfolio #interview #javascriptinterview #javascriptinterviewquestions #nextjs #nextjstutorial #reacttutorial #hookstep #redux #trading #shortsvideo #shortsvideo #india #dashboard #latest #viralvideo #viralshorts #viralshort #viralvideo #independenceday #2024 #fulscreenstatus #frontenddeveloper #quiz #learning #learn #education #tutorials #tutorials #new #marvel #drdoom #coding #new #html #css #loginpage #loginscreen #reactjsproject #dropdown menu html css