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
1
120

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
Tweet

More Decks by Lim Chee Aun

See All by Lim Chee Aun
Hacktoberfest SG 2018
Avatar for Lim Chee Aun cheeaun
0
130
CSS-ing the Super Silly Hackathon website
Avatar for Lim Chee Aun cheeaun
0
100
Bridging Connections
Avatar for Lim Chee Aun cheeaun
2
460

Other Decks in Technology

See All in Technology
Azure Well-Architected Framework入門
Avatar for tomokusaba tomokusaba
1
310
Oracle Base Database Service 技術詳細
Avatar for oracle4engineer oracle4engineer
PRO
11
77k
ZOZOのAI活用実践〜社内基盤からサービス応用まで〜
Avatar for ZOZO Developers zozotech
PRO
0
180
AI ReadyなData PlatformとしてのAutonomous Databaseアップデート
Avatar for oracle4engineer oracle4engineer
PRO
0
190
AI時代だからこそ考える、僕らが本当につくりたいスクラムチーム / A Scrum Team we really want to create in this AI era
Avatar for TAKAKING22 takaking22
6
3.5k
業務自動化プラットフォーム Google Agentspace に入門してみる #devio2025
Avatar for maroon1st maroon1st
0
190
Why React!?? Next.jsそしてReactを改めてイチから選ぶ
Avatar for ypresto ypresto
10
4.5k
Function calling機能をPLaMo2に実装するには / PFN LLMセミナー
Avatar for Preferred Networks pfn
PRO
0
930
英語は話せません！それでも海外チームと信頼関係を作るため、対話を重ねた2ヶ月間のまなび
Avatar for ニイオカ niioka_97
0
120
Findy Team+のSOC2取得までの道のり
Avatar for adachi.ryo rvirus0817
0
340
AI Agentと MCP Serverで実現する iOSアプリの 自動テスト作成の効率化
Avatar for スパイダープラス株式会社 spiderplus_cb
0
500
空間を設計する力を考える / 20251004 Naoki Takahashi
Avatar for SHIFT EVOLVE shift_evolve
PRO
3
340

Featured

See All Featured
Distributed Sagas: A Protocol for Coordinating Microservices
Avatar for Caitie McCaffrey caitiem20
333
22k
Making Projects Easy
Avatar for Brett Harned brettharned
119
6.4k
Writing Fast Ruby
Avatar for Erik Berlin sferik
629
62k
Dealing with People You Can't Stand - Big Design 2015
Avatar for Cassini Nazir cassininazir
367
27k
KATA
Avatar for Megan Lloyd mclloyd
32
15k
jQuery: Nuts, Bolts and Bling
Avatar for Doug Neiner dougneiner
64
7.9k
Responsive Adventures: Dirty Tricks From The Dark Corners of Front-End
Avatar for Vitaly Friedman smashingmag
252
21k
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
Avatar for Eileen M. Uchitelle eileencodes
26
3.1k
Being A Developer After 40
Avatar for Adrian Kosmaczewski akosma
91
590k
Producing Creativity
Avatar for Steve Smith orderedlist
PRO
347
40k
Documentation Writing (for coders)
Avatar for Carmen Chung carmenintech
75
5k
GitHub's CSS Performance
Avatar for Jon Rohan jonrohan
1032
460k

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/