V8: an open source JavaScript engine

[@madhououinkyoma]

Wow, a Google video from not long after the KZbin acquisition. Old times. V8 was the new shiny thing back then.

[@ssalmine]

Subtitles are bit off. When Lars says objects, it is translated 'optics'. Also, pauses -> 'processes'.

[@wojtekgame]

The v8 engine is so good that you can almost replicate it.

[@Spudst3r]

It must be so badass knowing you're the guy that literally made the web experiences of billions of people way faster.

[@hendersonfernandes7378]

I thought there was a bung on my screen...

[@DavidRussellM]

Learning Node.js, so I am going back over some of the fundamentals. Great video Lars Bak!

[@iampanzergrenadier]

+David Russell (Heydavidr) I'm in the same road, I feel really excited about everything around V8

[@DavidRussellM]

Glad to hear Edson! What type of work are you planning to do with your new found knowledge? =)

[@iampanzergrenadier]

:) I'm thinking about a simple chrome extension to download youtube audio. In the backend Node.js. Seems to be fun because It has to be high performance so, I guess Linux would be necessary :D but I dont know linux lol, then I have to learn, but Im excited :D and you?

[@DavidRussellM]

I am currently building a non-profit memorial website designed to incentivize people to donate to charity, I am super excited! I am mostly using wordpress atm, but I always like to learn something new. =)

[@iampanzergrenadier]

wow :) thats pretty awesome, good luck in the journey, I hope to hear about it in the future :)

[@apoguy322]

Pretty cool, it so cool that it almost seems like it should be used everywhere by now or smth

[@brettm73]

I am North American. I speak Spanish and that's because I lived in a Spanish speaking country for awhile. I could never do this presentation in Spanish. I find English speakers who are ignorant and cannot actually speak a second language themselves are the most discriminating. Lars actually speaks English quite well!

[@MennoWolvers]

Amazing how google improves such things

[@beardymonger]

The subtitles are great. It seems he's talking about physics, b/c it says "optics" a lot. Like in: create a new optic. :-) I LOVE GOOGLE (just a fanboi)

[@davidhcefx]

LOL

[@doug65536]

Great presentation. I like this guy.

[@gabydewilde]

Don't worry about it. The video describes how the googles replaced the javascript steam engine with one that runs on liquid mummies. They went from a live intrepertator to a preconditioned compiler. Script is now a a programing language. Google upgraded it self from a web design firm to a software institution. >:)

[@cyborgtroy]

possibly, but Javascript and Java are so different that it would be like comparing the speed of OpenGL to the speed of the Webkit layout engine. Like, they're totally different things...

[@themelc]

That was awesome. V8 is awesome. Lars Bak for governor!

[@zehanimohamedyoussef3736]

How can I download or use a specific version of V8 Like V8 4.8.0, checked online didn't find a satisfying answer I don't need the browser for that for the browser using the most recent version of V8 I mainly need Javascript V8 4.8.0 for Codeforces

[@gillexstudios]

I can just hear he's danish :D

[@Aidiakapi]

The way they compile javascript on the fly is even more amazing then the JIT in the CLR from Microsoft's .Net Framework. JavaScript has no rules, everything can be anything, that's making it a hell... Well it's great, and with de Google Chrome Frame for IE, you have a reasonable speed at all browsers. I wonder if Microsoft decided to use V8 in IE9... Let's hope so, well at least they got CSS3.

[@akbg]

Well, if you run a 32-bit application on top of a 64-bit processor you can't utilise all the added registers included in x86-64 instruction set, so you're theoretically right but practically slightly wrong. (In fact a 64-bit application can be even slower of a 32-bit one if they make massive use of pointers, because they allocate more RAM and so they provoke more cache and memory faults.)

[@patrickprakash8]

So this is the guy who created v8

[@kc2838]

No, Brendan Eich created V8 engine in 2008. This guy was in the core team responsible for creating v8.

[@patrickprakash8]

@@kc2838 But he was the lead developer

[@roodborstkalf9664]

Turned out to be a very important development.

[@patrickprakash8]

@@roodborstkalf9664 Yeah, So bad that he is not famous

[@rsteier]

The audio is super quiet, but great explanations!

[@53531640]

Now I now why I am not a computer prgrammer. All I kept wondering about was how Lars could master English to be able to explain this concept.

[@cortexcmdr]

"Optic" = "Object" in Denmark.

[@DanyPell]

I think he was referring to the translation, which show optics instead of objects.

[@BradenBest]

Google, there's one problem with your garbage collection. It doesn't remove properties from arrays when you delete them (delete array[index];), It leaves a null property in the array instead of completely removing it like it does in objects, so after performing a delete, the array will look like this [0, 1, null, 3] instead of what I assume it should look like, [0, 1, 3]

[@russotragik]

Why V8 and not Flat-6 or Radial-16?

[@adarshsahu330]

Am I The only one who is watching this video in 2022

[@ROFFLEWAFFLE2006]

I literally started a search for "javascript vv8 optics" thinking, "I bet it's some weird new object design pattern that will take days of reading to-oh...nevermind.." as I read this post...:\

[@StuartWoodwardJP]

How can we feedback about the subtitles? Every time Lars says "object" the subtitle says "optic"...

[@Anoyashu]

V8 engine god or what !!!!!!!!!!!

[@jbperez808]

@nanonymousful Yes. He sounds like he's saying "optic", but he clearly _meant_ object. The subs are wrong.

[@gamebuster800]

I just installed v8 on my machine to embed it in a webserver that executes JS files. I was amazed in how easy it was to get my first Hello World from a JS file.

[@ChrisCatesCC]

This is fucking perfect. Exactly what I was looking for.

[@acid_heart22]

Seeing these 13,14 year old comments makes me realise how far we have come.

[@mohimohi1983]

I've been using 64 bit flash on my 64 bit Arch Linux for more than a month. It's simply great. Much better than the 32 bit version for my 32 bit Ubuntu. Don't know why it's still alpha.

[@socialgflea80]

Cross platform yes! Linux can use it in Epiphany web browser or any other web browser. Very good.

[@DelusionalLogic]

I have NEVER seen anything that can't be done in ASM (seeing as ASM is really just bytecode with words instead of hex)

[@softwarelivre2389]

And now we have WebAssembly

[@jbperez808]

No, he *clearly* meant OBJECT, not optic. But due to his accent, it comes out sound like optic. What is interesting is if the CC is being done by AI or by human?

[@ajarnfrankie]

I wonder if GM is worried about the use of V8's name?

[@Excelsoft]

With all respect of course!

[@duadin]

nice job, thanks alot!

[@klaudyuxxx]

it clearly says OPTIC. It refers to a drawing of a point.

[@vaporthug]

@digerpaji Good luck getting the free marketing advertising, and distribution that comes with a meager 100 dollars a year Apple Developer package. This also includes an incredible IDE / UI, access to extremely responsive forum support, and if yo use all Java, porting to Android, BB, or any java machine should be quite easy. Also cant you write Java Apps in any text editor, like MS Word, BB Edit ? I really dont know myself, but I thought JAVA ( minus objects) are basically runtime text.

[@pierredelandre9464]

Because native code runs faster and has access to the underlying machine.

[@JungleNor]

well, Google created a self subtitled system that scan your video and then post that in the video for thows who want subtitle.

[@BradenBest]

Well, I recreated the result, specifically, to show why it can be a problem. But, the cause of the null value specifically was the delete keyword, as in this summary of what the "-" button does: removeTab = function(){ delete Tabs[Tabs.length-1] save() location.reload() } However, just a minute ago I found out there's an Array.prototype.pop() function which seems to entirely remove the last index of an array. [1,2,3] becomes [1,2].

[@akbg]

Well, please, instead of repeat "RTFM" can you tell me where (do you think) I'm wrong?

[@Aexorzist]

To clarify my point: Windows uses an userspace (not kernel) wrapper around the 64 bit libraries to run 32 bit applications. Under Linux you always need to install both 64 bit and 32 bit userspace libraries (e.g. /usr/lib and /usr/lib32) to run 32 bit apps. There is a very minimal performance loss due to this wrapping, and it would also be possible to implement these 32 bit libraries natively on the Windows kernel. It's just a design decision.

[@bogdanvolosincu]

i like js and java but this statements are so exagerated : "Javascript platform independent", "Java platform independent"

[@softwarelivre2389]

Not really. Works on Windows, Mac, Linux, Android, iOS, blackberry, game consoles, portable consoles, IOT, virtually everywhere, though with a layer of abstraction, that being the Javascript Runtime.

[@Poincare101]

I think he's saying object not optic. +1 if you were confused for a little while

[@jmm1233]

i want to play with it right now

[@jacksonkr_]

If arnold was a coder, he'd likely be this guy.

[@snifyy]

I don't got the idea of the 3rd temp class.

[@LeeBrenton]

@junkano maybe it was a java-script?

[@steblublu]

they made Chrome & V8 to encourage development of their Android platform.

[@paulio10]

Nice video overview of V8. Whoever translated the subtitles knows NOTHING about software development. Most of the keywords are completely mistranslated. If Google wants to email me the text of the transcript, I would be happy to correct it and mail it back. Just let me know.

[@davidhcefx]

Must be a physics student

[@siddhartharao8490]

Is java script an interpreted language, not a compiled language? If yes then what works does V8 js engine do?

[@softwarelivre2389]

Javascript is basically an asynchronous, high-level, dynamically and weakly typed, interpreted or Just In Time compiled language with an Event Loop and an Event Queue.

[@ivntl]

what's up with activeX on chrome? not working? that is bad :(

[@BradenBest]

That is a problem when you need the index numbers to be exact. When using a for loop to run through an array, and using the iterator to number blocks that represent part of the array, it will either say null, or if you check if the index exists before writing, blatantly skip a number, which leads to having to make your own garbage collection method to remove the offending index so the structure doesn't suffer. This is exactly the problem I ran into when making a tabbed notepad webapp.

[@lionlinux]

COOL! so easy and fine as spectrum was!!! I want to be in google!!!

[@BradenBest]

No, because if you the same thing on an object, it deletes the entire thing. obj = {0:0, 1:1, 2:2}; delete obj[1]; obj => {0:0, 2:2} While in an array, you have to build your own "garbage collection" method to purge the null value so it doesn't clog up your JSON string.

[@fanssex]

I'm having a hard time understanding, too. what kind of business are you in?

[@JParril]

Oh, I thought optics was some new slang they invented for the wee-eit project.

[@granck-c4t]

He's Danish. Please have a bit respect for such a smart guy.

[@kiddsock]

OH I should have had a V8!

[@RebornAc3]

How is V8 faster than SpiderMonkey? Chrome has become like a bloatware now.

[@ayanesatomi4250]

V8's development is independent of the actual Chrome development. Also, check out some Node.js, it uses V8 and it's really fast.

[@softwarelivre2389]

These days we have not only Node.js, but also Deno.js, both using the V8 engine.

[@Tajdev]

I don't know v8. But I love gooooogle chrome.

[@zachdyer1208]

Can the machine code be translated into a binary file?

[@dmitryboychev4004]

+Zach Dyer of-course

[@cyborgtroy]

"You can run on Mac OS or Windows" ... yeah, and I haven't seen Chrome for Linux yet. And it annoys me slightly. But not nearly as much as Flash video annoys me.

[@elpresidio]

I love you Google!

[@hprof1]

GOOOOOOOOOOOOOOOOOOOOGLE !!!

[@iloveu4avwe]

Now I should study Nodejs or V8?? please recommend me please

[@jotadev1668]

Node.js uses V8 as runtime execution. Understand V8 will help you to improve your code performance in Node.js

[@DanniV8]

I like that name :D

[@vov4egde]

@monospectr я тоже. Поржал с его "ДзяваСкрипт" =)))))

[@utubenamingsucks]

"to fetch the property out of optic" Who wrote the subtitle? bwah

[@halladba101]

Back when Google used 'http'

[@never_ask_my_name]

So this is the one who brought all this chaos to the world !

[@theurge14]

Lars Bak vs Lars Ulrich in a fight, who wins?

[@marios4275]

[@CepheiVV]

great

[@cyborgtroy]

oh, yeah, that was off-topic a bit, sorry.

[@gabydewilde]

Flash video doesn't work on Windows either if it makes you feel better. lol

[@blakjakau]

@Me04120, there are a few 64bit browsers that can run flash, not sure what platform you're using, but I'm using firefox3, 64bit on my ubuntu 7.10 system at work, and my ubuntu 8.041 and 8.10 systems at home and running flash.

[@mrrioify]

I think he means 'Object'

[@MandeepSandhu]

@DonutEatingLlama :) "Javascript optics..." :D I'm sure he Javascript "Objects"! :)

[@ganstarsanimal2]

verry nice

[@PaulAJohnston1963]

I thought he was saying optic and thought oh it's some sort of object doh!

[@cryptnotic]

subtitles: "optic" => "object".

[@Realcfx]

Of his pronoucing of "AArhus", yes he is danish.

[@jerneje]

lost me at "hidden class" :P

[@mohdazeem6787]

This is how they confuse people ur explanation is fake

[@ayanesatomi4250]

Cool story bro, make a better explanation video then

[@01010100001010101001]

Guy in shorts and white socks @3:54 spoiled presentation

[@prempink12311]

Why iam got recommended this video now

[@gabydewilde]

Want me to tell you what the video is about?

[@ronf57]

no offense but while this is an informative intro to hidden classes it was like a dictionary defining a word by using a more complex word. the idea of explaining javascript by showing CUSTOM assembler code is a bit wrong audience. and I get JNZ (jump not zero) and such I use to program machine code in hex not assembler. And this is the old Basic and C code using machine for speed (realtime functions) method. of course "function" and "method" mean different things in the OOP world of "objects".

[@BradenBest]

I recreated the problem here: jsfiddle(.)net/WxHuL/ What I ended up having to do in the original file was make my own garbageCollection function that methodically builds a second array on the existing values and returns that instead, like this update: jsfiddle(.)net/WxHuL/1/ If arrays had garbage collection, a null value wouldn't be left in the array, and I wouldn't have to use that potentially performance-threatening function. System/Browser: Ubuntu QQ/Chromium.

[@micgol]

Interesting. Do you have a code snippet to share? I can't reproduce it with simple for in iteration.

[@ZerqTM]

Cyborgtroy have a look at "Javascript the good parts" java script is not really ment to be a C syntax language is more closely related to scheam and lisp.. and it lacks block scope and there are a number of other features and bugs one needs to know about...

[@minimang123]

this seems like it's very susseptible to hackers and aggressive javascirpts... >.>

[@Lycam]

get behind me doctor! yaaaaatatatata

[@sfilatovs]

optic o_o

[@M0stBlunt3d]

@01010100001010101001 the art of trolling