• Sunday , 24 May 2020

What’s new in JavaScript (Google I/O ’19)

Code Canyon



This presentation gives an overview of cutting-edge JavaScript development techniques to build modern web and Node.js apps. Discover which features to expect in Chrome and Node.js soon, how the V8 engine optimizes for them, and how to improve real-world performance and stability on the Web and in Node.js.

Speakers:
• Mathias Bynens https://twitter.com/mathias
• Sathya Gunasekaran https://twitter.com/_gsathya

More info:
• https://v8.dev/
• https://twitter.com/v8js

Watch more #io19 here:
Web at Google I/O 2019 Playlist → https://goo.gle/io19web
Google I/O 2019 All Sessions Playlist → https://goo.gle/io19allsessions
Learn more on the I/O Website → https://google.com/io

Subscribe to the Chrome Developers Channel → https://goo.gle/ChromeDevs
Get started at → https://www.google.com/chrome/dev/

T60250

Original source

3d Ocean

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27 Comments

  1. Arnold K.
    December 14, 2019 at 19:48

    What about jQuery? Do think we have to forget completely this script language to the native JavaScript. I believe the jQuery is the best way for those who have more difficulty with the native language JS. Your feedbacks are welcome.

  2. Jijin - Malayali coder
    December 14, 2019 at 19:48

    ❤️❤️

  3. Arjun Sarthi
    December 14, 2019 at 19:48

    Wherever you go there's an Indian ..Proud

  4. Juan Carballo
    December 14, 2019 at 19:48

    Linux and google love node.js

  5. sigmiami
    December 14, 2019 at 19:48

    Class is messing

  6. -.- Cat
    December 14, 2019 at 19:48

    Finally weak reference, make my life so much easier, like I can finally trivially log CSP reports in memory without worrying about memory leaks.

  7. Wang Lan
    December 14, 2019 at 19:48

    The weak ref proposal doesn’t seem very clean.

  8. Decoder
    December 14, 2019 at 19:48

    23:23 தமிழ் மொழி. glad to see my native language. new flatmap method quite good

  9. Sancarn
    December 14, 2019 at 19:48

    Imo, it's actually really unfortunate private class fields were implemented. Now there will be some cases where you can't inspect the content of objects used by some other websites, which seems like both a security hazard and also just bad manners imo… Anyway, what was the problem with using _ to dictate private variables? Finally what's with the screwed up syntax? idk… Not happy about this feature personally.

  10. danielfromca
    December 14, 2019 at 19:48

    Things move so fast and get more complicated, so have to learn all time to keep up and even then I always feel like I’m behind..

  11. championchap
    December 14, 2019 at 19:48

    Stable sort is the best change. Couldn't care less about private class vars.

  12. John Paul Ada
    December 14, 2019 at 19:48

    We implemented something like Promise.allSettled before. We called it Promse.allMost 😂🤣

  13. Terence Cheung
    December 14, 2019 at 19:48

    82 DISLIKES FROM IE

  14. bhargav karanam
    December 14, 2019 at 19:48

    Private class fields and global this <3

  15. Gal S
    December 14, 2019 at 19:48

    Allways top notch quality! kudos

  16. Ibrahim Mohammed
    December 14, 2019 at 19:48

    private class fields 6:57
    Regex matchAll 9:16
    Numeric literals 10:19
    BigInt formatting 11:50
    flat & flatmap 13:23
    fromEntries 15:28
    Map to Object conversion 16:47
    globalThis 19:18
    Stable sort 20:00
    Intl.RelativeTimeFormat 22:45
    Intl.ListFormat 24:29
    Intl.DateTimeFormat -> formatRange 26:32
    Intl.Locale 27:10
    Top-Level await 28:12
    Promise.allSettled/Promise.any 31:13
    WeakRef 32:30

  17. AA A
    December 14, 2019 at 19:48

    I love how IE's compatibility is not even considered! 😂

  18. Dino Scheidt
    December 14, 2019 at 19:48

    God that hash private field class annotation is ugly. Why could they not just use typescripts implementation? Just add private in the front of it

  19. Rajesh Kumar
    December 14, 2019 at 19:48

    This comment is just for fun… for all others, polyfill is available… 😉

  20. VeslorTV
    December 14, 2019 at 19:48

    this is sick

  21. Winner Singh
    December 14, 2019 at 19:48

    I want to be Professional React developer.

  22. Avneesh Gupta
    December 14, 2019 at 19:48

    Promise.allSettled will be really helpful.

  23. Viraj Kamble
    December 14, 2019 at 19:48

    All the features doesn't support Internet Explorer…😂😂

  24. pg Lee
    December 14, 2019 at 19:48

    Cool, it is worth sharing.

  25. pandhari patel
    December 14, 2019 at 19:48

    Thanks, TC39

  26. Chunping Li
    December 14, 2019 at 19:48

    I will expect that new APIs and new virtual parsing engine for universal byte code

  27. Marko Cen
    December 14, 2019 at 19:48

    Safari is the new IE 😂

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