Google Frontend Interview With A Frontend Expert

In this video, I conduct a mock Google frontend interview with a frontend expert, Conner Ardman, who's also the FrontendExpert course creator and an ex-Facebook software engineer. As a Google Software Engineer, I interviewed dozens of candidates. This is exactly the type of frontend coding interview that you would get at Google or any other big tech company.
Check out the Google Frontend CSS interview that we filmed on Conner's channel: • Frontend CSS Coding In...
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[@clem]

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[@somerandomchannel382]

young people trying to sound expert by using Promise all and some very basic JS code examples with document.createElement and append? This isn't even pair with a shorter Frontend Course in 3 weeks. Heaven almighty.

[@caolijun2010]

@@somerandomchannel382 u should tell young man how to pick up javascript and what is source code of "doucment.createElement" in c or c++ by chrome or safari

[@ibrokhimjalalov2685]

Why not event deligation.

[@ConnerArdman]

Thanks for having me on, it was a lot of fun! 😀

[@arnasjuskevicius4193]

Conner, you are a beast! Great interview example, was super clear! I can learn to communicate ideas loudly from you! I would console.log at the end of every step to check if data is what I expect, even I know that code should work haha. :D

[@universecode1101]

Great ✌🏻

[@brockharris8169]

This is very cool. Great video Conner.

[@ConnerArdman]

@@brockharris8169 Thanks! Hope you're doing well, it's been a minute 😅

[@ConnerArdman]

@@arnasjuskevicius4193 Thanks, communicating ideas is definitely something I try to focus on a lot in interviews. And nothing wrong with adding console.log statements in every step. In hindsight, I probably should have logged out the result of each of the transformation functions after writing them. It can be a good sanity check, and it helps make sure you don't lose the interviewer along the way.

[@shadestorm3995]

I guess this is what the difference is between an experienced developer and someone like me... I would have run my code 10 times before writing another function... my man is writing logics with such confidence...

[@biggestthreattoyourexistence]

It's not a real interview Conner is a genius.

[@mr.mystiks9968]

@@biggestthreattoyourexistence it’s pretty realistic for candidates that know how to interview well. doesn’t take a “genius” to do this.

[@vulcanvulcan2963]

My manager will write hundreds of lines of code before testing anything and he gets it 99% correct every time. He’s been doing it for around 8 years and the biggest difference between someone like him and a beginner is that they have a very strong understanding of how they are going to solve the entire problem from the beginning, even complex problems. Lots of beginners try to come up with the steps to a solution as they develop and will get confused because they don’t have a clear understanding of what their final solution should be.

[@mileicampeonmundial]

to be fair it was too basic

[@shinchannohara9511]

@@vulcanvulcan2963 thanks for the comment❤😃

[@Skalexsong]

This is such a great example of a very confident interview, gotta learn a lot to be more like that.

[@eliotlnguyen7329]

Because of your youtube interview content, I've bought your algo expert course for a full year. The marketing worked.

[@hemantprasad1018]

Thank you Clement 💓💓💓. Was waiting for it for so long....

[@farazcsk]

Also, the courses are very very good, thanks for creating them. Looking forward to “Mobile expert”!

[@hamidubawe4496]

Me too

[@DriveandThrive]

The speed in which he did this in is quite impressive. Makes me realize how far I have to go!

[@RockstahRolln]

Thank you for this Terrific video! I needed exactly this to practice my interview questions! Great job to you both!

[@RockstahRolln]

​@Nikola B. Ethics and problem-solving are two different things, perhaps you should learn the difference first. On my own, I am learning how to solve problems. In fact, I have been doing so at the different companies I have worked for several years. I would like to have a fighting chance by learning how to pass certain interview questions and this right here demonstrates that. If you find this unethical, then you should'nt be here. Have a Blessed day!

[@RockstahRolln]

@Nikola B. Oufff This right here, what you have said "Can you at least treat me as a fellow human being and spit to my face without pretending you're kind?" why would I spit on your face when you were the one to come at me about ethics? I did not ask for cheat codes, so please do NOT imply that or, simply assume so. I am merely learning here as do everyone else who has positively commented on here. So yes, thank you, I will feed the right wolf that I choose. If you choose what I have said to be poison, then so be it. Your choice.

[@CoderGrammer]

As a primarily back end dev, this was eye opening! Thanks buddy

[@MatejDrbohlav01]

Exactly what I thought, I 100% agree, it is just beautiful and fulfills the picture.

[@leeboyin945]

Great demonstration! As both interviewer and interviewee, I learned a lot from this video, thanks.

[@yafetbefkadu8508]

Idk why I feel like watching these just teaches me more things Iv never seen or tried before you can always learn from others and try it yourself

[@osborndelangel5994]

Yo Clem, I just want to say you and Conner are great teachers. You guys have explained concepts that were “scary” and now they’re not.

[@loristnorton3723]

Thinking about the solutions is one thing. But properly articulating it with a coherent accuracy is without a doubt a mark of someone with confidence and experience.

[@havefun5519]

Really cool, detailed explanation and good enough speed.

[@DebashishGhoshOfficial]

This shows how important it is to choose a proper data structure for the problem. Otherwise it would be difficult to navigate the code and understand what is being done.

[@nnlniclb]

I have been learning to code for the last month or so but I still don't understand what you mean by a proper data structure for the problem. Can you please explain like I'm 5?

[@joni062443]

Very true. Fundamentals is always key, frontend or backend. DSA is king. Lots of practice and build lots of things.

[@user-tw7ox8dd2b]

That's just very cool, a few times ago I couldn't explain how works with the DOM. It's just really simple and very useful.

[@030426101993]

Thank you for making this video. This is just awesome and super helpful for my upcoming interview.

[@ATIWatchReviews]

This is fantastic, thank you both

[@luketutber9326]

Once again, a very good video by Clement.

[@aman.social2100]

That was really smooth. STRONG HIRE!! Agree 💯%

[@explore-learn-share6937]

This is outstanding. Using plain html, css and javascript for wonderful page rendering

[@aurelianspodarec2629]

Pretty basics. Would be better off using factories instead and create functions for the API calls, make it abstract etc... Nothing special.

[@mrchedda]

Not the React way unfortunately. 12:30

[@dongwong297]

Loved this video! I am new to coding and have never seen frontend, so this is was real fun :)

[@qweqwe_Flinstone]

wow i learned so much after almost one hour video :O I hope theres more like this videos on your channel D:

[@MatejDrbohlav01]

hey! I am a junior java developer now fo several month and have 1 year BootCamp behind as well (backend java) - I think I now understand what "front-end" development means! And it is beautiful! It fulfills the picture, it is just soooo good :) gl with everything :))

[@hoangphan5224]

That's the best FE interview format!

[@Alex-xo1nt]

I learned a lot from this. Thank you!

[@pratikkumar939]

Was Waiting for this

[@clem]

I present to you Conner, also known as FrontendChad. 💪😎 Check out the CSS interview that we did on Conner's channel! kzbin.info/www/bejne/l5yXoWqpmbB9h9k

[@davidardo4466]

@clemnt please answer me

[@masternobody1896]

Juat got rejected from Google xD

[@masternobody1896]

Lol

[@AndresLobaton]

Awsome, I liked a lot this interview. I hope in a couple of years try to apply to one of this roles. Thank you so much

[@Gringo0517]

Thanks Connor! Great interview

[@sanjeev3799]

Very nice, helpful and motivating. Thank you!

[@Booyamakashi]

Interesting approach with building the DOM using DOM. My first intuition was to create a template literal and just call functions inside of it. Kind of like templating language.

[@tuxsbro]

Then you have to worry about XSS

[@johnames6430]

@@bleulejour forget all that and use Svelte?

[@FeFeronkaMetallica]

This

[@abhaytiwari6411]

Please bring more video like this one.

[@licokr]

It's an interesting interview :) So amazing, I hope that here I live frontend engineer interviews would be going like you guys do here. Thank you for the great video!

[@johnames6430]

I've heard some stories where a company had the candidates build things with pasta for the tech interview in a small groups, there are many insane things when hiring in tech

[@MikeBertelsenDK]

The interviewer is really intense.. Kinda stresses me out.. But it was very interesting to watch, great content, challenges and I learned something new so that's always worth celebrating!

[@ardhiyanah5544]

Some i learned from this video is promise all and replace function, thank you so much for new insight, oh and you miss the progress bar, it was mentioned in the early interview but yeah the code still amazing to me

[@AbmAsadullah]

Many many thanks, Really helpful for me!!

[@lukasmajerik6439]

Cool demonstration. Thx!

[@jialx]

These interviews are super realistic of what its like to be a FE dev.. I always code using a web based IDE, implement features with another dev looking over my shoulder, and explain every decision I make as I make them out loud.

[@NathanHedglin]

😂 right? Interviewing is a completely different skillset. Imagine hiring a chef solely based on his ability to sharpen knives.

[@jakubnowak7091]

presenting your skills is a part of this job, unless you want to be a underpaid specialist

[@aufkeinsten7883]

@@jakubnowak7091 Presenting your solution is only a part of interviewing though, the more problematic part is performing your job while having someone look over your shoulder, that someone being the deciding factor in whether you get the job you want. Without trying to add to stereotypes, I do also think it's fair to say that this is especially bad for people who - on average - tend to be more shy and less skilled in social situations.

[@johnames6430]

@@aufkeinsten7883 many great people have been denied jobs because they are shy when they might have been really good for it, that's just part of the discrimination that goes on in hiring and if we are going to correct for discrimination based on race and gender we must also correct for discrimination based on shyness, disability, and many other things.

[@soultune908]

​@@johnames6430 exactly. I'm little shy and it kinda sucks when communication is given more importance then coding skills. I do communicate when necessary but I won't involve in chitchat.

[@abhinavghosh725]

The Google Backend interview is going to be interesting !!!!

[@khaledbenzid5365]

Bro can center a div

[@clashwithmoi8926]

you can call prototype functions either way. both will work. that's the beauty of it

[@VishakhasEngineeredPlans]

This was so so cool and helpful! There are not many frontend interview prep videos, and this is just what I was looking for! Is it okay if I recreate/use the api endpoints to practice this same problem?

[@clem]

Sure. Alternatively, buy FrontendExpert and get access to way more problems! 💪 frontendexpert.io

[@VishakhasEngineeredPlans]

@@clem Looking into it right now :) Did have a question, does it provide the env like you've shown in the video? I mean will I be able to run and test my code for promises and array problems etc.?

[@joelvarghese3370]

@@andreigugeanu Yes, this happens when you call an API from another domain. I don't think there's anything you can do from the front end to solve it. I'm not sure though and maybe others could add to it.

[@adsarasin]

@@VishakhasEngineeredPlans yup! You are seeing them use the platform in the video. It would be the same.

[@ericwango]

I completely understand the logic and it doesn't seem too hard, but it would take me half a day to actually get the right logic and code it up like he did hahahah

[@TheBarthinator]

after 4 years working in the industry i fully understood everything and would have probably coded it the same way, however, my man is very bold not testing functions throughout i would have tested each one checking the data with not as much confidence as him!

[@bavideomaker29]

I enjoy these, great job. But, I’m old and often can’t see much of the text. Is there any way you can zoom in or use larger fonts in the future so those of us who started coding on Apple II’s can read?

[@makkie8593]

I use youtube in browser so i can zoom in

[@siposrr]

In quality 360p or 480p you cannot read the texts properly, even on a monitor. You should try it with min. 720p.

[@Aliakbaresmaeiliiii]

so useful man thank you so much

[@_Sizzin]

That was, surprisingly for what I expected from Google interviews, a quite easy challenge. I would have done the code similarly. Though I'm not confident I would answer the "how would you clean up the code" as well as he did.

[@jww0007]

if it was harder how would you complete it in 45m. interviews are about communication & problem solving, you'd be surprised how many people can't do this as calmy

[@_Sizzin]

@@jww0007 A harder challenge not necessarily means that it takes longer to complete. Believe me, I've had much more difficult live coding challenges from companies half as big as Google.

[@theLowestPointInMyLife]

No way the real interviews would have something this basic.

[@catalineu77]

@@theLowestPointInMyLife NoT EvERY OnE iS As SkiLlEd LIkE YoU,ThIS Is MoCK INtErVIew So US ThE UnSkILlED PLeBs CaN LeArN ALoNG ThE Way,ok boss?

[@jahangirakbar4524]

My question is: Do you have to work on designing part aswell as a front end web developer?

[@izopi4a]

a simple page with 3 functions, "fist step is to use react". way to go

[@trblmkr5139]

oh this is gonna be GOOD, just started watching lol

[@alexe3332]

41 min. If you want to order the categories, you have to assign each category as a key then when finished, iterate through the keys and sort them in an array then every time you select, select from the array and use the value to point to the key in the object. Once you get that, you just iterate through that set within the category. I just had to do this myself.

[@BinaryAdventure]

Clement are you still rocking the ultra-minimalist apartment? I see a big monitor back there... I'm getting worried 😅

[@levin1160]

Nice function building and logics, could use this to improve mine ^^. How many years of exp did he have?

[@Gugmi]

Is it wrong to use question mark conditionals in this type of interview? Also I’m assuming using a library like Axios is out of the question for this type of interview?

[@mikeicon8488]

This was a good confirmation of my love for template literals. I'd much rather return template literals in most cases than creating elements with js methods.

[@mikeicon8488]

give me return ``; over const div = document.createElement('div'); div.classList.add('category'); return div; any day

[@benjaminmoseslieb9856]

Can someone explain why he didn't use an HTML template strings and opted for creating javascript elements? I must be missing something, because that's what I would have gone for.

[@17teacmrocks]

when I interviewed for Google FE, they asked me all algo questions? I didn't do anything like this. It was like dfs, bfs, rate limiter, compose pipe, string algos, trie, tree

[@MrJettann]

instead of creating every element on the page, can we use template and fill it's fields with our info? It template tag not recommended now?

[@9990490677]

Apart from the API building round, my Front End interview for Google did not have any FE specific round.

[@seobookpro]

Very interesting there is a more options to achieve tasks like this actually.

[@TheSocialDeveloper]

This is the kind of interview I’d love to do

[@CertificationTerminal]

Impressive!

[@ahmedamerica]

Thanks for this 👍💪

[@cryzz0n]

Awesome content. Would Google interviewers allow us to use Angular instead of vanilla for implementation questions?

[@biggestthreattoyourexistence]

no

[@iam_a_sad_khan]

he made it look so easy.

[@neeeeeck9005]

Do Front-end devs at google get specific type of algorithm questions? Or are those universal, same as for software engineers?

[@omrtheater7244]

Why do we need to await inside the fetchAndAppendQuestions function? Isn't it enough we used await once during fetch?

[@geocine]

If only this is the kind of frontend interviews I get, I would confidently ace it

[@harsh55]

i don't think the current trend uses this sort of interview technique, as major companies are biased towards candidates' React, Vue, or angular knowledge. I can consider this technique for interns or fresh graduates

[@BukhariTechnologies]

Please bring an iOS Software Engineer mock interview.

[@Sindoku]

I definitely feel I could pass this portion of the interview at Google.

[@macklemo5968]

You should try to do a format where you have subscribers attempting real coding interviews :)

[@user-uf8yn8xm7h]

wow atlast! something I understand along the way lol

[@prosperadebayo7589]

wow just speechless

[@Zackmahas]

Inaspire to be just as good as this man

[@takundanashechidamba946]

thank you 🤝

[@antona3050]

Absolute machine

[@Aihab1]

The problem with choosing any random category and adding a question into it (for the random complexity question) is that you can't control the number of questions going into one category and as I see on the screen, if the count of random categories was 4, all the questions were almost equally divided into each of the 4 categories. Thoughts?

[@laskiri1875]

randomize your array of questions first and then come the first questions.length/4 questions into the first category and so on (assuming you have 4 categories. First thing that pops into my mind atleast.

[@azzhraanee201128]

better coding strategies, for example: - the status class should be defined in a different function, so that when there is a change in the CSS or additional status, it's easier to update.

[@salihiyassine2355]

Can you please do the same with backend interview (java, spring, ...), thanks a lot

[@georgeak4454]

amazing video .what about full - stack or android?? or back end

[@danielcooke3243]

hasOwnProperty checks the entire prototype chain so its not recommended to use it over plain object indexing. So already a mark down for that

[@TranSy-sz2ps]

It was a ton of fun :D.

[@solaaar3]

you can see why libraries like React/Vue are making life much easier and organized.

[@bitflippa]

@ConnerArdman you said you use a Map but instead you used a simple Object, would be nice to see how the implementation would look like using a Map. Also, using the for...of loop would be faster than the forEach loop.

[@Krilllind]

What I was lacking from this interview was usage of even more modern API:s like Map over usage of just an object and classes to structure code a bit more. But I guess first question should be, what browsers am I targeting, from there you can evaluate what API:s to use😊

[@diegoalvarez437]

Modern frameworks has tools like Babel when building your app, so you don't really need to worry about modern syntax.

[@Krilllind]

@@diegoalvarez437 Uhm... Not correct, babel can transform your code to an earlier version of ES if needed, but it won't convert things like an object into a Map. Those operate differently.

[@diegoalvarez437]

@@Krilllind you're right I misunderstood your text.

[@bigbob2364]

dam dude u pro or something?

[@Krilllind]

@@bigbob2364 Worked with tech for over six years as fullstack developer, focusing on web frontends and dotnet backend. So not a pro yet, but on my way☕

[@programmerjavascript4474]

Clement is prince of JavaScript

[@Kim-by5uy]

Great solution. I would have solved by looping through all the questions and grouping them by categories before mapping them to html

[@alexielknight]

Thats what he did in the function getQuestionsByCategory. It returns an object with a property for each category and the value of each property is an array containing the questions of that category.

[@HowT0Code]

I'd use reduce for transforming list of questions

[@kokisaito4865]

In fact, learning the font-end also requires learning the back-end

[@rebelshadowrm]

What is the advantage of creating elements vs cloning a template? when creating those question items.

[@cocomadfans950]

Nice one!

[@johnconnor9787]

You are doing a super great job. It was very interesting and informative

[@tanviralamshuvo]

Good One Bro.

[@harispapadopoulos4295]

I missed those!

[@SMURFPICTURES]

is it really good design to make everything a const? especially when creating an empty object knowing its gonna be populated later?

[@JacobAuthier]

Great!

[@dskygn]

Is this interview just for showing the steps of interview? This questions seems entry level.

[@nativeKar]

As a React and Ben Awad fanboy, I will never be able to apply the learnings from this video at a Google FEE interview. But hey, there's always Meta! 😜🤪