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10 JavaScript Interview Questions and Answers
- February 5, 2024
- Posted by: MainInstructor
- Category: JavaScript
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Video Title: 10 JavaScript Interview Questions and Answers
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question 6: Array.isArray(possibleArray)
1.What is Scope? 0:25
2.What is Hoisting? 1:02
3.What is a closure? 1:57
4.What is functional programming? 2:55
5.What is the difference between synchronous and asynchronous code? 3:49
6. How can you determine if something is an array? 4:50
7. Higher Order Functions 5:18
8.What is the difference between an array and array-like object? 6:07
9.What is type coercion? 6:39
10.What is the difference between two way data binding and one way data flow? 7:09
everyone loves javascript 🙂
isnt var inside the function available outside?
in 2nd qn though its function expression, it is declared using var know, it won't get hoisted?
One correction on var Hoisting.
e.g
console.log(x); // undefined
var x;
It creates the structure to the top of its context like below,
var x;
x = undefined;
console.log(x) // undefined
Can be added Prototype, inheritance, Call-Bind-Apply, Prototype Chain,
Nice and beautiful video
Async !== not blocking
Awesome explanation! Thanks!
The term array-like object always makes me laugh because it's nothing like an array. It's what your
Nan would get you for Christmas if you said you wanted an array.
This is great. Thank you
Slow
This video is helpful but explanation is way too quick.
We are waiting for part 2 video JS interview questions 🙂 You are a great content creator! Nice video, Nice explanations,
8. It's very confusing when you don't know that "arguments" is a keyword
Wow, I hope it is multiple choice…I never, ever use these terms and completely forgot some of them…I would have totally failed a oral quiz on this…
Waiting for another video Js interview questions
Hey people and specially for the newbies out there. * DO NOT * use the construct at 5:06 . If I m in a point in my life where I have to check the type of a variable I my as well check if this variable is defined. so instead of doing : `if ( arr && arr.constructor === Array )` just use `Array.isArray(arr)` . General rule of thumb use this kind of static function construct and learn all of them, I said * ALL*.
THX!!!
this is a good video
Hey, thanks!
Thank you!
So I can explain 8 of 10 questions right, so am I ready for a job?
Very useful video. Can you please make another video on other interview questions.
How can you tell if its an array? Array.isArray().
Talking about scope without including let and const seems strange to me.
what about call, apply and bind. These are also being used much and if you can make some videos on es5+ that would be awesome like arrow functions, rest operators , map, filter and reduce. Also, a small video on inheritance through prototypes and class extends will be super cool 🙂
regarding your React video.
hey i had a question on the react video i was wondering, why did you put ipad iphone text on the left side simply because i wanted to know your thought process
on why you do what you do example like putting certain things in different places.
A javascript programmer should know what "this" is.
I have watched a lot of your tutorial. Very good videos and fast pacing style!
On that mean stack contactlistapp, i was trying to add some validation logic but cannot get it to work. would like see how you do it? you post a new video, or simply update your git repository so I can view your code and download it. Many thanks!
You are making good videos. Cheers for that.
Try to make some videos on real life projects, that would be beneficial to all of us, as learning by doing is a good way to understand some topics. For example: To do list, some small games, or any project you can think of 🙂