JavaScript - Tricky Interview Questions And Answers

Description: Preparing for a JavaScript programming interview can be a nightmare. We'll pick some tricky interview questions, demystify the concepts behind them and try to implement solutions. We'll attempt to cover the following topics during the webinar:
Hoisting
Closures and IIFE
Prototypes / Inheritance
Scoping
Arrow Functions
Apply() / Call() / Bind() and Function Currying
Function context / this keyword
Javascript Event Loop
Code Samples: The code samples for this webinar can be found on our public github repository: github.com/ske...
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[@DevangPatil]

At 25:15, BLOCK scope feature is added. We need to revisit this video.. and thanks for the wonderful video.

[@parifuture]

Call and Apply difference -> Call starts with C so arguments are commas, Apply start with A so argument is an Array

[@krishna04051984]

Great logic

[@sayanmitra6646]

Hi Sir,Thanks a lot for your valuable videos. I have a question.Can you please write and explain the below program: add(2)(3)(4)...(n) // how can we achieve this? here it should work for 1 argument and for n no.of arguments as well.Will be waiting for your answer.I think we can solve it with spread operator but not able to complete the program. Thanks

[@tlbatchelor]

This was a useful video but I think the last script should use getTime() instead of getMilliseconds().

[@SkewCode]

Please click on the "subscribe" button (it's free) on this page. We're conducting free, weekly webinars on JavaScript and web development topics (Angular, ReactJS, NodeJS, HTML5, CSS3, Bootstrap etc). Happy learning!

[@raghavanaliassaravananm1546]

Good video. Thank you !!

[@digitalAndhraPradesh]

let s =7; function foo(){s=9; console.log(s)};foo() ;console.log(s) //Output is : 9 9 Here "s" can be accessible at out side ?

[@ronaldoorozco7211]

Hi, I have a doubt, also the reference values as Objects and Arrays return true using the === operator. Examples: {} !== {} returns true, as well as [] !== []. Aren't those the same results that you get with NaN !== NaN?

[@PrashanthPuranik]

The comparison works the way you have mentioned, i.e. comparing literal values for non-primitives like objects and arrays. The video talks about variables being compared - i.e. if obj = { x : 1 }, then obj !== obj will be false.

[@kirillpavlovskii8342]

thank you

[@MadivadaRavi]

you are super man

[@parifuture]

Questions: Function Debouncing @1:38:10

[@PrashanthPuranik]

I messed up function debouncing. Please ignore the explanation in it. An actual implementation will involve setTimeout() and clearTimeout()

[@saranshdhyani3164]

It was showing techsith tutorial in recommended he is also a very good teacher of js

[@sreekumarmenon]

0.3 == +(0.1+0.2).toFixed(2). --will return true

[@sudhakard1910]

funny