Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Things I've learnt from my Hacker News web app

Avatar for Lim Chee Aun Lim Chee Aun
January 22, 2013
Technology
130
1

Things I've learnt from my Hacker News web app

A talk I gave at the Front-end Developers User Group meet up in Hackerspace SG.

Avatar for Lim Chee Aun

Lim Chee Aun

January 22, 2013

More Decks by Lim Chee Aun

See All by Lim Chee Aun
Hacktoberfest SG 2018
Avatar for Lim Chee Aun cheeaun
0
150
CSS-ing the Super Silly Hackathon website
Avatar for Lim Chee Aun cheeaun
0
120
Bridging Connections
Avatar for Lim Chee Aun cheeaun
2
500

Other Decks in Technology

See All in Technology
生成AI×AWS CDK×AWS FISで"振り返れる"ミニGameDayをつくろう
Avatar for yoshimi0227 yoshimi0227
1
280
あなたの『Site』はどこですか？ — xREという考え方
Avatar for miyamu miyamu
0
1.2k
Network Firewallやっていき！
Avatar for 荒木 ARK news_it_enj
0
160
なぜ私たちのSREプラクティスはなかなか機能しないのか 〜システムより先に組織を見る〜 / Why our SRE practices aren't really working
Avatar for VTRyo vtryo
4
3.9k
美しいコードを書くためにF#を学んでみた話
Avatar for yud0uhu yud0uhu
1
450
AI時代の闇と光
Avatar for tatsuya1970 tatsuya1970
0
100
オブザーバビリティ、本当に活用できてる？ 〜API連携×生成AIで成熟度を自動評価〜
Avatar for dmmsre dmmsre
1
3.4k
Empower GenAI with Agile - あなたのアジャイルが生成AIのバフになる仕組み
Avatar for Hiroyuki Ito (TheHiro) hageyahhoo
1
210
kintone の AI コワーカーを、 Anthropic にエージェントを"ホストさせて"作った話 #devkinmeetup
Avatar for Kazuya Sugimoto sugimomoto
0
110
DatabricksにおけるMCPソリューション
Avatar for Takaaki Yayoi taka_aki
1
270
Claude Code公式skillで 自分の仕事を少しずつ手放そう！（Claude Code開発ノウハウ大公開スペシャル by クラスメソッド）
Avatar for Kei Masaoka kaym
1
460
“それは自分の仕事じゃない"を 越えて行け
Avatar for yuukiyo yuukiyo
1
440

Featured

See All Featured
Building a A Zero-Code AI SEO Workflow
Avatar for Ian Lurie portentint
PRO
0
630
Let's Do A Bunch of Simple Stuff to Make Websites Faster
Avatar for Chris Coyier chriscoyier
508
140k
The Art of Delivering Value - GDevCon NA Keynote
Avatar for David Neal reverentgeek
16
2k
It's Worth the Effort
Avatar for 3n 3n
188
29k
Helping Users Find Their Own Way: Creating Modern Search Experiences
Avatar for Dan Newman danielanewman
31
3.2k
A designer walks into a library…
Avatar for Paul Jervis Heath pauljervisheath
211
24k
Bioeconomy Workshop: Dr. Julius Ecuru, Opportunities for a Bioeconomy in West Africa
Avatar for AKADEMIYA2063 akademiya2063
PRO
1
180
Skip the Path - Find Your Career Trail
Avatar for Mark Kilby mkilby
1
170
Noah Learner - AI + Me: how we built a GSC Bulk Export data pipeline
Avatar for Tech SEO Connect techseoconnect
PRO
0
220
Collaborative Software Design: How to facilitate domain modelling decisions
Avatar for Kenny Baas-Schwegler baasie
1
260
AI in Enterprises - Java and Open Source to the Rescue
Avatar for ivargrimstad ivargrimstad
0
1.4k
コードの90%をAIが書く世界で何が待っているのか / What awaits us in a world where 90% of the code is written by AI
Avatar for r-kagaya rkaga
62
45k

Transcript

  1. Things I've learnt from my Things I've learnt from my

    Hacker News web app Hacker News web app

  2. Hello, I'm Chee Aun. • Hardcore web developer. • Created

    quite a bunch of fun little side projects. • Tweet a lot of interesting stuff at @cheeaun • Occasionally read Hacker News.

  3. What is Hacker News?

  4. news.ycombinator.com news.ycombinator.com

  5. I built HackerWeb.

  6. HackerWeb • A simple read-only web app client for Hacker

    News. • Mobile-optimized, iOS-optimized. • Works on all modern browsers, hopefully. • Check it out at hackerwebapp.com
  7. None
  8. None
  9. None

  10. Cutting-edge web tech -webkit-overflow-scrolling: touch, localStorage, sessionStorage, CORS, Application Cache,

    CSS Animation, CSS Media Queries, Flexible Box Layout (old spec), requestAnimationFrame, Web Workers, and more…

  11. Must-reads • How I built the Hacker News mobile web

    app • How I built the Hacker News mobile web app, Part 2 • Introducing HackerWeb

  12. Focus on 3 things 1. -webkit-overflow-scrolling: touch (Momentum scrolling) 2.

    CORS (Cross-Origin Resource Sharing) 3. Application Cache

  13. 1 Momentum scrolling

  14. -webkit-overflow-scrolling: touch • iOS-specific, for now. No official spec. •

    Introduced since iOS5 (October 2011). • For overflow:scroll elements.

  15. Before iOS5 • Two fingers to scroll overflow:scroll elements. •

    Unintuitive and undiscoverable. • Scrolling libs to the rescue: iScroll, Scrollability, TouchScroll, FTScroller, etc

  16. Starting from iOS5 • One finger to scroll overflow:scroll elements.

    • -webkit-overflow-scrolling: touch adds momentum to it. • Scrolling libs are still in used due to bugs/quirks. • Bug: Can't scroll to top when tapping status bar

  17. Demo time • Normal scrolling: jsbin.com/uhiyac/1 • Momentum scrolling: jsbin.com/uhiyac/2

  18. Resources • Overthrow – overflow:auto polyfill • jQuery Mobile: touchOverflow

    • Nested divs with overflow:touch

  19. 2 CORS

  20. Before CORS • Use JSONP. • Request data from a

    server in a different domain. • Example: json-head.appspot.com/? url=http://www.google.com/&callback=test • A “hack”.

  21. CORS • A W3C Working Draft. • Allow JavaScript to

    make cross-domain requests. • An interplay between the server and the client. Access-Control-Allow-Origin: *

  22. Use CORS today!

  23. Who implements CORS? • Google APIs • Amazon S3 •

    YouTube API • Dropbox API • GitHub v3 API • …and more

  24. Resources • Enable CORS • CORS isn’t just for XHR

    • Can I use CORS? • Using CORS - HTML5 Rocks • CORS Proxy

  25. 3 Application Cache

  26. AppCache • Easily make your web site/app offline. • A

    working draft. • A douchebag.

  27. Super simple steps Step 1. <html manifest="manifest.appcache"> Step 2. CACHE

    MANIFEST index.html stylesheet.css …

  28. Versioning CACHE MANIFEST # 2013-01-21:v1 index.html stylesheet.css …

  29. Google Reader

  30. Reeddit – Reddit web app client

  31. Track AppCache versions Use Google Analytics' event tracking

  32. Make local dev easier • Serve 404 for .appcache files

    • For HackerWeb, I use node server.js -noappcache

  33. Resources • A Beginner's Guide to Using the Application Cache

    • Fixing Application Cache Community Group • Appcache Facts

  34. More resources • Moobile – new mobile application framework built

    on MooTools • Ratchet – Prototype iPhone apps with simple HTML, CSS and JS components • HTML5 Rocks • Can I use…

  35. Thanks • cheeaun.com • twitter.com/cheeaun • github.com/cheeaun Images used in

    this presentation • flickr.com/photos/diathesis/2262012694/