devangnpatil/JavaScript-Interview-Questions: Common Questions that may be Asked on a Job Interview · GitHub

Edit:

• Having been in around fifty 60-to-90-minute JavaScript-related tech interviews, every single day for a month (yeah I'm doing the math right, I had triple interviews on certain days, double interview in others -- dunno how many brain cells I've lost in the meantime : ).
• And having reached to an offer level from 3 of those firms that I interviewed in 10 days (it's a miracle, when you consider the hiring process may take up to several months),
• And having accepted an offer with a generous amount of options and with a salary approaching the market median...

I can say, with a certain level of confidence, that companies that are worth working for do not ask "how do you sort a red-black tree" kind of questions, they rather focus on use cases that'll have an actual value in your day-to-day work life, such as...

• closures (a must!)
• Array.prototype, String.prototype functions
• relatively new stuff (css3 selectors, querySelectorAll)
• performance-related questions (edit DOM offline, string concatenation using an array buffer)
• functional programming,
• prototypal intheritance,
• memoization, mapreduce,
• and more of other fun stuff,
• and they'll give you an actual project to work with if they see you as a "strong candidate".

That is they don't play a game where the rules are created to generate a "virtual reality" to "keep people out". Per contra, they try to do their best to get to know you, both technically and behaviorally/culturally before they give their decision.

And in my honest opinion, that's the proper approach to take.

Actully I've been asked mostly what I mentioned in this o2.js blog post, If you're serious about getting a decent JavaScript Engineering job that you'll love to go to every single day of the week, doing amazing thing with genius minds, then you had better review that link, before studying booring CS101-ish interview questions.

Don't get me wrong though, there still are companies that ask about why manhole covers are round, or how you can balance a binary tree. So do study those boring stuf, just to increase the odds. Besides, if you do not memorize but actually study those sh*t, chances are that you'll learn a lot from those questions as well, at least as an exercise ;).

This repository contains a growing list of JavaScript Job interview questions and related resources.

Currently, it may look more like "Interview Questions in JavaScript" rather than "JavaScript" Interview Questions. I mean the emphasis is on the interview, rather than on JavaScript, so to speak. However, I will be adding more domain-specific JS/DOM/CSS3/HTML5 questions once I cover the basics, such as algorithms, linked lists, stacks etc -- which appear in job interviews regardless of your domain of expertise.

I use nodejs to run examples. However any decent browser should equally work.

//TODO: update this readme.